3 |6 | | 5 | 7| | 87 | 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- (0,0) 0 open = (0,1) 4 open = 1 2 4 9 (0,2) 2 open = 2 9 (0,3) 0 open = (0,4) 2 open = 1 8 (0,5) 4 open = 1 2 4 8 (0,6) 5 open = 1 2 5 8 9 (0,7) 4 open = 1 2 5 8 (0,8) 4 open = 1 5 7 9 (1,0) 0 open = (1,1) 4 open = 1 2 4 9 (1,2) 3 open = 2 6 9 (1,3) 4 open = 1 2 4 8 (1,4) 3 open = 1 3 8 (1,5) 0 open = (1,6) 6 open = 1 2 3 6 8 9 (1,7) 4 open = 1 2 6 8 (1,8) 4 open = 1 3 6 9 (2,0) 0 open = (2,1) 0 open = (2,2) 2 open = 2 6 (2,3) 3 open = 1 2 5 (2,4) 0 open = (2,5) 3 open = 1 2 3 (2,6) 0 open = (2,7) 4 open = 1 2 5 6 (2,8) 4 open = 1 3 5 6 (3,0) 4 open = 1 2 7 9 (3,1) 0 open = (3,2) 4 open = 2 3 7 9 (3,3) 4 open = 1 4 7 9 (3,4) 0 open = (3,5) 5 open = 1 3 4 6 9 (3,6) 3 open = 1 2 6 (3,7) 4 open = 1 2 4 6 (3,8) 2 open = 1 6 (4,0) 2 open = 1 2 (4,1) 0 open = (4,2) 0 open = (4,3) 2 open = 1 8 (4,4) 3 open = 1 3 8 (4,5) 3 open = 1 3 8 (4,6) 0 open = (4,7) 0 open = (4,8) 2 open = 1 5 (5,0) 3 open = 1 7 9 (5,1) 3 open = 1 5 9 (5,2) 3 open = 5 7 9 (5,3) 5 open = 1 4 7 8 9 (5,4) 0 open = (5,5) 5 open = 1 4 6 8 9 (5,6) 4 open = 1 5 6 8 (5,7) 0 open = (5,8) 3 open = 1 5 6 (6,0) 3 open = 2 6 9 (6,1) 4 open = 2 3 5 9 (6,2) 0 open = (6,3) 2 open = 2 9 (6,4) 0 open = (6,5) 3 open = 2 6 9 (6,6) 4 open = 3 5 6 9 (6,7) 0 open = (6,8) 0 open = (7,0) 4 open = 4 6 7 9 (7,1) 3 open = 4 5 9 (7,2) 5 open = 5 6 7 8 9 (7,3) 0 open = (7,4) 4 open = 1 6 7 8 (7,5) 4 open = 1 6 8 9 (7,6) 4 open = 1 5 6 9 (7,7) 3 open = 1 5 6 (7,8) 0 open = (8,0) 4 open = 2 6 7 9 (8,1) 3 open = 2 3 9 (8,2) 6 open = 2 3 6 7 8 9 (8,3) 5 open = 1 2 7 8 9 (8,4) 4 open = 1 6 7 8 (8,5) 0 open = (8,6) 4 open = 1 3 6 9 (8,7) 2 open = 1 6 (8,8) 0 open = next square = (0,2) construct_candidates k=1 next square candidates (0,2) slot 1 change board[0][2] to 2 3 2|6 | | 5 | 7| | 87 | 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=2 next square candidates (2,2) slot 2 change board[2][2] to 6 3 2|6 | | 5 | 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=3 next square candidates (1,2) slot 3 change board[1][2] to 9 3 2|6 | | 5 9| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=4 next square candidates (0,1) slot 4 change board[0][1] to 1 312|6 | | 5 9| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=5 next square candidates (0,4) slot 5 change board[0][4] to 8 312|68 | | 5 9| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=6 next square candidates (0,5) slot 6 change board[0][5] to 4 312|684| | 5 9| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=7 next square candidates (0,7) slot 7 change board[0][7] to 5 312|684| 5 | 5 9| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=8 next square candidates (0,6) slot 8 change board[0][6] to 9 312|684|95 | 5 9| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=9 next square candidates (0,8) slot 9 change board[0][8] to 7 312|684|957| 5 9| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=10 next square candidates (1,1) slot 10 change board[1][1] to 4 312|684|957| 549| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=11 next square candidates (1,3) slot 11 change board[1][3] to 1 312|684|957| 549|1 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=12 next square candidates (1,4) slot 12 change board[1][4] to 3 312|684|957| 549|137| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=13 next square candidates (1,8) slot 13 change board[1][8] to 6 312|684|957| 549|137| 6| 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=14 next square candidates (2,5) slot 14 change board[2][5] to 2 312|684|957| 549|137| 6| 876| 92|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=15 next square candidates (2,3) slot 15 change board[2][3] to 5 312|684|957| 549|137| 6| 876|592|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=16 next square candidates (2,7) slot 16 change board[2][7] to 1 312|684|957| 549|137| 6| 876|592|41 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=17 next square candidates (2,8) slot 17 change board[2][8] to 3 312|684|957| 549|137| 6| 876|592|413| ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=18 next square candidates (3,8) slot 18 change board[3][8] to 1 312|684|957| 549|137| 6| 876|592|413| ----------- 8 | 5 | 1| 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (4,3) slot 19 change board[4][3] to 8 312|684|957| 549|137| 6| 876|592|413| ----------- 8 | 5 | 1| 64|8 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (4,4) slot 20 change board[4][4] to 1 312|684|957| 549|137| 6| 876|592|413| ----------- 8 | 5 | 1| 64|81 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (4,0) slot 21 change board[4][0] to 2 312|684|957| 549|137| 6| 876|592|413| ----------- 8 | 5 | 1| 264|81 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (4,5) slot 22 change board[4][5] to 3 312|684|957| 549|137| 6| 876|592|413| ----------- 8 | 5 | 1| 264|813|79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (4,8) slot 23 change board[4][8] to 5 312|684|957| 549|137| 6| 876|592|413| ----------- 8 | 5 | 1| 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=24 next square candidates (-1,-1) slot 24 clear board[4][8] to make freecount=35 clear board[4][5] to make freecount=36 clear board[4][0] to make freecount=37 clear board[4][4] to make freecount=38 clear board[4][3] to make freecount=39 clear board[3][8] to make freecount=40 clear board[2][8] to make freecount=41 clear board[2][7] to make freecount=42 clear board[2][3] to make freecount=43 clear board[2][5] to make freecount=44 clear board[1][8] to make freecount=45 clear board[1][4] to make freecount=46 clear board[1][3] to make freecount=47 change board[1][3] to 2 312|684|957| 549|2 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=12 next square candidates (6,3) slot 12 change board[6][3] to 9 312|684|957| 549|2 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=13 next square candidates (1,4) slot 13 change board[1][4] to 1 312|684|957| 549|217| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=14 next square candidates (2,3) slot 14 change board[2][3] to 5 312|684|957| 549|217| | 876|59 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=15 next square candidates (2,5) slot 15 change board[2][5] to 3 312|684|957| 549|217| | 876|593|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=16 next square candidates (2,8) slot 16 change board[2][8] to 1 312|684|957| 549|217| | 876|593|4 1| ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=17 next square candidates (2,7) slot 17 change board[2][7] to 2 312|684|957| 549|217| | 876|593|421| ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=18 next square candidates (3,8) slot 18 change board[3][8] to 6 312|684|957| 549|217| | 876|593|421| ----------- 8 | 5 | 6| 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (1,8) slot 19 change board[1][8] to 3 312|684|957| 549|217| 3| 876|593|421| ----------- 8 | 5 | 6| 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (4,4) slot 20 change board[4][4] to 3 312|684|957| 549|217| 3| 876|593|421| ----------- 8 | 5 | 6| 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (4,8) slot 21 change board[4][8] to 5 312|684|957| 549|217| 3| 876|593|421| ----------- 8 | 5 | 6| 64| 3 |795| | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (-1,-1) slot 22 clear board[4][8] to make freecount=37 clear board[4][4] to make freecount=38 clear board[1][8] to make freecount=39 clear board[3][8] to make freecount=40 clear board[2][7] to make freecount=41 clear board[2][8] to make freecount=42 clear board[2][5] to make freecount=43 clear board[2][3] to make freecount=44 clear board[1][4] to make freecount=45 change board[1][4] to 3 312|684|957| 549|237| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=14 next square candidates (2,5) slot 14 change board[2][5] to 1 312|684|957| 549|237| | 876| 91|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=15 next square candidates (2,3) slot 15 change board[2][3] to 5 312|684|957| 549|237| | 876|591|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=16 next square candidates (2,7) slot 16 change board[2][7] to 2 312|684|957| 549|237| | 876|591|42 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=17 next square candidates (2,8) slot 17 change board[2][8] to 3 312|684|957| 549|237| | 876|591|423| ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=18 next square candidates (4,4) slot 18 change board[4][4] to 1 312|684|957| 549|237| | 876|591|423| ----------- 8 | 5 | | 64| 1 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (4,0) slot 19 change board[4][0] to 2 312|684|957| 549|237| | 876|591|423| ----------- 8 | 5 | | 264| 1 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (4,3) slot 20 change board[4][3] to 8 312|684|957| 549|237| | 876|591|423| ----------- 8 | 5 | | 264|81 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (4,5) slot 21 change board[4][5] to 3 312|684|957| 549|237| | 876|591|423| ----------- 8 | 5 | | 264|813|79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (4,8) slot 22 change board[4][8] to 5 312|684|957| 549|237| | 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (6,0) slot 23 change board[6][0] to 6 312|684|957| 549|237| | 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 6 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=24 next square candidates (6,5) slot 24 change board[6][5] to 2 312|684|957| 549|237| | 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 6 1|942| 78| |3 | 2| | 5| 4| ----------- construct_candidates k=25 next square candidates (1,8) slot 25 change board[1][8] to 1 312|684|957| 549|237| 1| 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 6 1|942| 78| |3 | 2| | 5| 4| ----------- construct_candidates k=26 next square candidates (3,8) slot 26 change board[3][8] to 6 312|684|957| 549|237| 1| 876|591|423| ----------- 8 | 5 | 6| 264|813|795| | 2 | 3 | ----------- 6 1|942| 78| |3 | 2| | 5| 4| ----------- construct_candidates k=27 next square candidates (-1,-1) slot 27 clear board[3][8] to make freecount=32 clear board[1][8] to make freecount=33 change board[1][8] to 6 312|684|957| 549|237| 6| 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 6 1|942| 78| |3 | 2| | 5| 4| ----------- construct_candidates k=26 next square candidates (3,8) slot 26 change board[3][8] to 1 312|684|957| 549|237| 6| 876|591|423| ----------- 8 | 5 | 1| 264|813|795| | 2 | 3 | ----------- 6 1|942| 78| |3 | 2| | 5| 4| ----------- construct_candidates k=27 next square candidates (-1,-1) slot 27 clear board[3][8] to make freecount=32 clear board[1][8] to make freecount=33 clear board[6][5] to make freecount=34 clear board[6][0] to make freecount=35 clear board[4][8] to make freecount=36 clear board[4][5] to make freecount=37 clear board[4][3] to make freecount=38 clear board[4][0] to make freecount=39 clear board[4][4] to make freecount=40 clear board[2][8] to make freecount=41 clear board[2][7] to make freecount=42 clear board[2][3] to make freecount=43 clear board[2][5] to make freecount=44 clear board[1][4] to make freecount=45 clear board[6][3] to make freecount=46 clear board[1][3] to make freecount=47 clear board[1][1] to make freecount=48 clear board[0][8] to make freecount=49 clear board[0][6] to make freecount=50 clear board[0][7] to make freecount=51 clear board[0][5] to make freecount=52 clear board[0][4] to make freecount=53 clear board[0][1] to make freecount=54 change board[0][1] to 4 342|6 | | 5 9| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=5 next square candidates (1,1) slot 5 change board[1][1] to 1 342|6 | | 519| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=6 next square candidates (0,4) slot 6 change board[0][4] to 1 342|61 | | 519| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=7 next square candidates (0,5) slot 7 change board[0][5] to 8 342|618| | 519| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=8 next square candidates (0,7) slot 8 change board[0][7] to 5 342|618| 5 | 519| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=9 next square candidates (0,6) slot 9 change board[0][6] to 9 342|618|95 | 519| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=10 next square candidates (0,8) slot 10 change board[0][8] to 7 342|618|957| 519| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=11 next square candidates (1,4) slot 11 change board[1][4] to 3 342|618|957| 519| 37| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=12 next square candidates (1,8) slot 12 change board[1][8] to 6 342|618|957| 519| 37| 6| 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=13 next square candidates (2,5) slot 13 change board[2][5] to 2 342|618|957| 519| 37| 6| 876| 92|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=14 next square candidates (1,3) slot 14 change board[1][3] to 4 342|618|957| 519|437| 6| 876| 92|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=15 next square candidates (2,3) slot 15 change board[2][3] to 5 342|618|957| 519|437| 6| 876|592|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=16 next square candidates (2,7) slot 16 change board[2][7] to 1 342|618|957| 519|437| 6| 876|592|41 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=17 next square candidates (2,8) slot 17 change board[2][8] to 3 342|618|957| 519|437| 6| 876|592|413| ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=18 next square candidates (3,8) slot 18 change board[3][8] to 1 342|618|957| 519|437| 6| 876|592|413| ----------- 8 | 5 | 1| 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (4,4) slot 19 change board[4][4] to 8 342|618|957| 519|437| 6| 876|592|413| ----------- 8 | 5 | 1| 64| 8 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (4,3) slot 20 change board[4][3] to 1 342|618|957| 519|437| 6| 876|592|413| ----------- 8 | 5 | 1| 64|18 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (4,0) slot 21 change board[4][0] to 2 342|618|957| 519|437| 6| 876|592|413| ----------- 8 | 5 | 1| 264|18 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (4,5) slot 22 change board[4][5] to 3 342|618|957| 519|437| 6| 876|592|413| ----------- 8 | 5 | 1| 264|183|79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (4,8) slot 23 change board[4][8] to 5 342|618|957| 519|437| 6| 876|592|413| ----------- 8 | 5 | 1| 264|183|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=24 next square candidates (-1,-1) slot 24 clear board[4][8] to make freecount=35 clear board[4][5] to make freecount=36 clear board[4][0] to make freecount=37 clear board[4][3] to make freecount=38 clear board[4][4] to make freecount=39 clear board[3][8] to make freecount=40 clear board[2][8] to make freecount=41 clear board[2][7] to make freecount=42 clear board[2][3] to make freecount=43 clear board[1][3] to make freecount=44 clear board[2][5] to make freecount=45 clear board[1][8] to make freecount=46 clear board[1][4] to make freecount=47 clear board[0][8] to make freecount=48 clear board[0][6] to make freecount=49 clear board[0][7] to make freecount=50 clear board[0][5] to make freecount=51 clear board[0][4] to make freecount=52 change board[0][4] to 8 342|68 | | 519| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=7 next square candidates (0,5) slot 7 change board[0][5] to 1 342|681| | 519| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=8 next square candidates (0,7) slot 8 change board[0][7] to 5 342|681| 5 | 519| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=9 next square candidates (0,6) slot 9 change board[0][6] to 9 342|681|95 | 519| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=10 next square candidates (0,8) slot 10 change board[0][8] to 7 342|681|957| 519| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=11 next square candidates (1,4) slot 11 change board[1][4] to 3 342|681|957| 519| 37| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=12 next square candidates (1,8) slot 12 change board[1][8] to 6 342|681|957| 519| 37| 6| 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=13 next square candidates (2,5) slot 13 change board[2][5] to 2 342|681|957| 519| 37| 6| 876| 92|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=14 next square candidates (1,3) slot 14 change board[1][3] to 4 342|681|957| 519|437| 6| 876| 92|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=15 next square candidates (2,3) slot 15 change board[2][3] to 5 342|681|957| 519|437| 6| 876|592|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=16 next square candidates (2,7) slot 16 change board[2][7] to 1 342|681|957| 519|437| 6| 876|592|41 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=17 next square candidates (2,8) slot 17 change board[2][8] to 3 342|681|957| 519|437| 6| 876|592|413| ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=18 next square candidates (3,8) slot 18 change board[3][8] to 1 342|681|957| 519|437| 6| 876|592|413| ----------- 8 | 5 | 1| 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (4,4) slot 19 change board[4][4] to 1 342|681|957| 519|437| 6| 876|592|413| ----------- 8 | 5 | 1| 64| 1 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (4,0) slot 20 change board[4][0] to 2 342|681|957| 519|437| 6| 876|592|413| ----------- 8 | 5 | 1| 264| 1 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (4,3) slot 21 change board[4][3] to 8 342|681|957| 519|437| 6| 876|592|413| ----------- 8 | 5 | 1| 264|81 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (4,5) slot 22 change board[4][5] to 3 342|681|957| 519|437| 6| 876|592|413| ----------- 8 | 5 | 1| 264|813|79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (4,8) slot 23 change board[4][8] to 5 342|681|957| 519|437| 6| 876|592|413| ----------- 8 | 5 | 1| 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=24 next square candidates (-1,-1) slot 24 clear board[4][8] to make freecount=35 clear board[4][5] to make freecount=36 clear board[4][3] to make freecount=37 clear board[4][0] to make freecount=38 clear board[4][4] to make freecount=39 clear board[3][8] to make freecount=40 clear board[2][8] to make freecount=41 clear board[2][7] to make freecount=42 clear board[2][3] to make freecount=43 clear board[1][3] to make freecount=44 clear board[2][5] to make freecount=45 clear board[1][8] to make freecount=46 clear board[1][4] to make freecount=47 clear board[0][8] to make freecount=48 clear board[0][6] to make freecount=49 clear board[0][7] to make freecount=50 clear board[0][5] to make freecount=51 clear board[0][4] to make freecount=52 clear board[1][1] to make freecount=53 clear board[0][1] to make freecount=54 clear board[1][2] to make freecount=55 clear board[2][2] to make freecount=56 clear board[0][2] to make freecount=57 change board[0][2] to 9 3 9|6 | | 5 | 7| | 87 | 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=2 next square candidates (0,4) slot 2 change board[0][4] to 1 3 9|61 | | 5 | 7| | 87 | 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=3 next square candidates (0,1) slot 3 change board[0][1] to 2 329|61 | | 5 | 7| | 87 | 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=4 next square candidates (1,2) slot 4 change board[1][2] to 6 329|61 | | 5 6| 7| | 87 | 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=5 next square candidates (-1,-1) slot 5 clear board[1][2] to make freecount=54 clear board[0][1] to make freecount=55 change board[0][1] to 4 349|61 | | 5 | 7| | 87 | 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=4 next square candidates (0,5) slot 4 change board[0][5] to 2 349|612| | 5 | 7| | 87 | 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=5 next square candidates (2,3) slot 5 change board[2][3] to 5 349|612| | 5 | 7| | 87 |59 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=6 next square candidates (2,5) slot 6 change board[2][5] to 3 349|612| | 5 | 7| | 87 |593|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=7 next square candidates (1,4) slot 7 change board[1][4] to 8 349|612| | 5 | 87| | 87 |593|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=8 next square candidates (1,3) slot 8 change board[1][3] to 4 349|612| | 5 |487| | 87 |593|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=9 next square candidates (4,4) slot 9 change board[4][4] to 3 349|612| | 5 |487| | 87 |593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=10 next square candidates (0,6) slot 10 change board[0][6] to 5 349|612|5 | 5 |487| | 87 |593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=11 next square candidates (0,7) slot 11 change board[0][7] to 8 349|612|58 | 5 |487| | 87 |593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=12 next square candidates (0,8) slot 12 change board[0][8] to 7 349|612|587| 5 |487| | 87 |593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=13 next square candidates (1,1) slot 13 change board[1][1] to 1 349|612|587| 51 |487| | 87 |593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=14 next square candidates (1,2) slot 14 change board[1][2] to 2 349|612|587| 512|487| | 87 |593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=15 next square candidates (1,7) slot 15 change board[1][7] to 6 349|612|587| 512|487| 6 | 87 |593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=16 next square candidates (2,2) slot 16 change board[2][2] to 6 349|612|587| 512|487| 6 | 876|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=17 next square candidates (2,8) slot 17 change board[2][8] to 1 349|612|587| 512|487| 6 | 876|593|4 1| ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=18 next square candidates (2,7) slot 18 change board[2][7] to 2 349|612|587| 512|487| 6 | 876|593|421| ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (3,8) slot 19 change board[3][8] to 6 349|612|587| 512|487| 6 | 876|593|421| ----------- 8 | 5 | 6| 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (4,8) slot 20 change board[4][8] to 5 349|612|587| 512|487| 6 | 876|593|421| ----------- 8 | 5 | 6| 64| 3 |795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (-1,-1) slot 21 clear board[4][8] to make freecount=38 clear board[3][8] to make freecount=39 clear board[2][7] to make freecount=40 clear board[2][8] to make freecount=41 clear board[2][2] to make freecount=42 clear board[1][7] to make freecount=43 clear board[1][2] to make freecount=44 change board[1][2] to 6 349|612|587| 516|487| | 87 |593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=15 next square candidates (1,7) slot 15 change board[1][7] to 2 349|612|587| 516|487| 2 | 87 |593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=16 next square candidates (2,2) slot 16 change board[2][2] to 2 349|612|587| 516|487| 2 | 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=17 next square candidates (1,6) slot 17 change board[1][6] to 3 349|612|587| 516|487|32 | 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=18 next square candidates (1,8) slot 18 change board[1][8] to 9 349|612|587| 516|487|329| 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (2,7) slot 19 change board[2][7] to 1 349|612|587| 516|487|329| 872|593|41 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (2,8) slot 20 change board[2][8] to 6 349|612|587| 516|487|329| 872|593|416| ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (3,8) slot 21 change board[3][8] to 1 349|612|587| 516|487|329| 872|593|416| ----------- 8 | 5 | 1| 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (4,8) slot 22 change board[4][8] to 5 349|612|587| 516|487|329| 872|593|416| ----------- 8 | 5 | 1| 64| 3 |795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (-1,-1) slot 23 clear board[4][8] to make freecount=36 clear board[3][8] to make freecount=37 clear board[2][8] to make freecount=38 clear board[2][7] to make freecount=39 change board[2][7] to 6 349|612|587| 516|487|329| 872|593|46 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (2,8) slot 20 change board[2][8] to 1 349|612|587| 516|487|329| 872|593|461| ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (3,8) slot 21 change board[3][8] to 6 349|612|587| 516|487|329| 872|593|461| ----------- 8 | 5 | 6| 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (4,8) slot 22 change board[4][8] to 5 349|612|587| 516|487|329| 872|593|461| ----------- 8 | 5 | 6| 64| 3 |795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (-1,-1) slot 23 clear board[4][8] to make freecount=36 clear board[3][8] to make freecount=37 clear board[2][8] to make freecount=38 clear board[2][7] to make freecount=39 clear board[1][8] to make freecount=40 clear board[1][6] to make freecount=41 change board[1][6] to 9 349|612|587| 516|487|92 | 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=18 next square candidates (1,8) slot 18 change board[1][8] to 3 349|612|587| 516|487|923| 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (2,7) slot 19 change board[2][7] to 1 349|612|587| 516|487|923| 872|593|41 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (2,8) slot 20 change board[2][8] to 6 349|612|587| 516|487|923| 872|593|416| ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (3,8) slot 21 change board[3][8] to 1 349|612|587| 516|487|923| 872|593|416| ----------- 8 | 5 | 1| 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (4,8) slot 22 change board[4][8] to 5 349|612|587| 516|487|923| 872|593|416| ----------- 8 | 5 | 1| 64| 3 |795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (-1,-1) slot 23 clear board[4][8] to make freecount=36 clear board[3][8] to make freecount=37 clear board[2][8] to make freecount=38 clear board[2][7] to make freecount=39 change board[2][7] to 6 349|612|587| 516|487|923| 872|593|46 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (2,8) slot 20 change board[2][8] to 1 349|612|587| 516|487|923| 872|593|461| ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (3,8) slot 21 change board[3][8] to 6 349|612|587| 516|487|923| 872|593|461| ----------- 8 | 5 | 6| 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (4,8) slot 22 change board[4][8] to 5 349|612|587| 516|487|923| 872|593|461| ----------- 8 | 5 | 6| 64| 3 |795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (-1,-1) slot 23 clear board[4][8] to make freecount=36 clear board[3][8] to make freecount=37 clear board[2][8] to make freecount=38 clear board[2][7] to make freecount=39 clear board[1][8] to make freecount=40 clear board[1][6] to make freecount=41 clear board[2][2] to make freecount=42 clear board[1][7] to make freecount=43 clear board[1][2] to make freecount=44 clear board[1][1] to make freecount=45 change board[1][1] to 2 349|612|587| 52 |487| | 87 |593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=14 next square candidates (1,2) slot 14 change board[1][2] to 6 349|612|587| 526|487| | 87 |593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=15 next square candidates (-1,-1) slot 15 clear board[1][2] to make freecount=44 clear board[1][1] to make freecount=45 clear board[0][8] to make freecount=46 clear board[0][7] to make freecount=47 clear board[0][6] to make freecount=48 change board[0][6] to 8 349|612|8 | 5 |487| | 87 |593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=11 next square candidates (0,7) slot 11 change board[0][7] to 5 349|612|85 | 5 |487| | 87 |593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=12 next square candidates (0,8) slot 12 change board[0][8] to 7 349|612|857| 5 |487| | 87 |593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=13 next square candidates (1,1) slot 13 change board[1][1] to 1 349|612|857| 51 |487| | 87 |593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=14 next square candidates (1,2) slot 14 change board[1][2] to 2 349|612|857| 512|487| | 87 |593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=15 next square candidates (1,7) slot 15 change board[1][7] to 6 349|612|857| 512|487| 6 | 87 |593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=16 next square candidates (2,2) slot 16 change board[2][2] to 6 349|612|857| 512|487| 6 | 876|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=17 next square candidates (2,8) slot 17 change board[2][8] to 1 349|612|857| 512|487| 6 | 876|593|4 1| ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=18 next square candidates (2,7) slot 18 change board[2][7] to 2 349|612|857| 512|487| 6 | 876|593|421| ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (3,8) slot 19 change board[3][8] to 6 349|612|857| 512|487| 6 | 876|593|421| ----------- 8 | 5 | 6| 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (4,8) slot 20 change board[4][8] to 5 349|612|857| 512|487| 6 | 876|593|421| ----------- 8 | 5 | 6| 64| 3 |795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (-1,-1) slot 21 clear board[4][8] to make freecount=38 clear board[3][8] to make freecount=39 clear board[2][7] to make freecount=40 clear board[2][8] to make freecount=41 clear board[2][2] to make freecount=42 clear board[1][7] to make freecount=43 clear board[1][2] to make freecount=44 change board[1][2] to 6 349|612|857| 516|487| | 87 |593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=15 next square candidates (1,7) slot 15 change board[1][7] to 2 349|612|857| 516|487| 2 | 87 |593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=16 next square candidates (2,2) slot 16 change board[2][2] to 2 349|612|857| 516|487| 2 | 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=17 next square candidates (1,6) slot 17 change board[1][6] to 3 349|612|857| 516|487|32 | 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=18 next square candidates (1,8) slot 18 change board[1][8] to 9 349|612|857| 516|487|329| 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (2,7) slot 19 change board[2][7] to 1 349|612|857| 516|487|329| 872|593|41 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (2,8) slot 20 change board[2][8] to 6 349|612|857| 516|487|329| 872|593|416| ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (3,8) slot 21 change board[3][8] to 1 349|612|857| 516|487|329| 872|593|416| ----------- 8 | 5 | 1| 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (4,8) slot 22 change board[4][8] to 5 349|612|857| 516|487|329| 872|593|416| ----------- 8 | 5 | 1| 64| 3 |795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (-1,-1) slot 23 clear board[4][8] to make freecount=36 clear board[3][8] to make freecount=37 clear board[2][8] to make freecount=38 clear board[2][7] to make freecount=39 change board[2][7] to 6 349|612|857| 516|487|329| 872|593|46 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (2,8) slot 20 change board[2][8] to 1 349|612|857| 516|487|329| 872|593|461| ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (3,8) slot 21 change board[3][8] to 6 349|612|857| 516|487|329| 872|593|461| ----------- 8 | 5 | 6| 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (4,8) slot 22 change board[4][8] to 5 349|612|857| 516|487|329| 872|593|461| ----------- 8 | 5 | 6| 64| 3 |795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (-1,-1) slot 23 clear board[4][8] to make freecount=36 clear board[3][8] to make freecount=37 clear board[2][8] to make freecount=38 clear board[2][7] to make freecount=39 clear board[1][8] to make freecount=40 clear board[1][6] to make freecount=41 change board[1][6] to 9 349|612|857| 516|487|92 | 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=18 next square candidates (1,8) slot 18 change board[1][8] to 3 349|612|857| 516|487|923| 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (2,7) slot 19 change board[2][7] to 1 349|612|857| 516|487|923| 872|593|41 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (2,8) slot 20 change board[2][8] to 6 349|612|857| 516|487|923| 872|593|416| ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (3,8) slot 21 change board[3][8] to 1 349|612|857| 516|487|923| 872|593|416| ----------- 8 | 5 | 1| 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (4,8) slot 22 change board[4][8] to 5 349|612|857| 516|487|923| 872|593|416| ----------- 8 | 5 | 1| 64| 3 |795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (-1,-1) slot 23 clear board[4][8] to make freecount=36 clear board[3][8] to make freecount=37 clear board[2][8] to make freecount=38 clear board[2][7] to make freecount=39 change board[2][7] to 6 349|612|857| 516|487|923| 872|593|46 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (2,8) slot 20 change board[2][8] to 1 349|612|857| 516|487|923| 872|593|461| ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (3,8) slot 21 change board[3][8] to 6 349|612|857| 516|487|923| 872|593|461| ----------- 8 | 5 | 6| 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (4,8) slot 22 change board[4][8] to 5 349|612|857| 516|487|923| 872|593|461| ----------- 8 | 5 | 6| 64| 3 |795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (-1,-1) slot 23 clear board[4][8] to make freecount=36 clear board[3][8] to make freecount=37 clear board[2][8] to make freecount=38 clear board[2][7] to make freecount=39 clear board[1][8] to make freecount=40 clear board[1][6] to make freecount=41 clear board[2][2] to make freecount=42 clear board[1][7] to make freecount=43 clear board[1][2] to make freecount=44 clear board[1][1] to make freecount=45 change board[1][1] to 2 349|612|857| 52 |487| | 87 |593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=14 next square candidates (1,2) slot 14 change board[1][2] to 6 349|612|857| 526|487| | 87 |593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=15 next square candidates (-1,-1) slot 15 clear board[1][2] to make freecount=44 clear board[1][1] to make freecount=45 clear board[0][8] to make freecount=46 clear board[0][7] to make freecount=47 clear board[0][6] to make freecount=48 clear board[4][4] to make freecount=49 clear board[1][3] to make freecount=50 clear board[1][4] to make freecount=51 clear board[2][5] to make freecount=52 clear board[2][3] to make freecount=53 clear board[0][5] to make freecount=54 change board[0][5] to 8 349|618| | 5 | 7| | 87 | 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=5 next square candidates (1,4) slot 5 change board[1][4] to 3 349|618| | 5 | 37| | 87 | 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=6 next square candidates (2,5) slot 6 change board[2][5] to 2 349|618| | 5 | 37| | 87 | 92|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=7 next square candidates (1,3) slot 7 change board[1][3] to 4 349|618| | 5 |437| | 87 | 92|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=8 next square candidates (2,2) slot 8 change board[2][2] to 6 349|618| | 5 |437| | 876| 92|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=9 next square candidates (1,2) slot 9 change board[1][2] to 2 349|618| | 5 2|437| | 876| 92|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=10 next square candidates (1,1) slot 10 change board[1][1] to 1 349|618| | 512|437| | 876| 92|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=11 next square candidates (2,3) slot 11 change board[2][3] to 5 349|618| | 512|437| | 876|592|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=12 next square candidates (2,7) slot 12 change board[2][7] to 1 349|618| | 512|437| | 876|592|41 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=13 next square candidates (2,8) slot 13 change board[2][8] to 3 349|618| | 512|437| | 876|592|413| ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=14 next square candidates (4,4) slot 14 change board[4][4] to 8 349|618| | 512|437| | 876|592|413| ----------- 8 | 5 | | 64| 8 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=15 next square candidates (4,3) slot 15 change board[4][3] to 1 349|618| | 512|437| | 876|592|413| ----------- 8 | 5 | | 64|18 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=16 next square candidates (4,0) slot 16 change board[4][0] to 2 349|618| | 512|437| | 876|592|413| ----------- 8 | 5 | | 264|18 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=17 next square candidates (4,5) slot 17 change board[4][5] to 3 349|618| | 512|437| | 876|592|413| ----------- 8 | 5 | | 264|183|79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=18 next square candidates (4,8) slot 18 change board[4][8] to 5 349|618| | 512|437| | 876|592|413| ----------- 8 | 5 | | 264|183|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (0,8) slot 19 change board[0][8] to 7 349|618| 7| 512|437| | 876|592|413| ----------- 8 | 5 | | 264|183|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (8,7) slot 20 change board[8][7] to 6 349|618| 7| 512|437| | 876|592|413| ----------- 8 | 5 | | 264|183|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 64| ----------- construct_candidates k=21 next square candidates (1,7) slot 21 change board[1][7] to 8 349|618| 7| 512|437| 8 | 876|592|413| ----------- 8 | 5 | | 264|183|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 64| ----------- construct_candidates k=22 next square candidates (7,7) slot 22 change board[7][7] to 5 349|618| 7| 512|437| 8 | 876|592|413| ----------- 8 | 5 | | 264|183|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 52| | 5| 64| ----------- construct_candidates k=23 next square candidates (0,7) slot 23 change board[0][7] to 2 349|618| 27| 512|437| 8 | 876|592|413| ----------- 8 | 5 | | 264|183|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 52| | 5| 64| ----------- construct_candidates k=24 next square candidates (0,6) slot 24 change board[0][6] to 5 349|618|527| 512|437| 8 | 876|592|413| ----------- 8 | 5 | | 264|183|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 52| | 5| 64| ----------- construct_candidates k=25 next square candidates (3,7) slot 25 change board[3][7] to 4 349|618|527| 512|437| 8 | 876|592|413| ----------- 8 | 5 | 4 | 264|183|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 52| | 5| 64| ----------- construct_candidates k=26 next square candidates (7,1) slot 26 change board[7][1] to 9 349|618|527| 512|437| 8 | 876|592|413| ----------- 8 | 5 | 4 | 264|183|795| | 2 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=27 next square candidates (5,1) slot 27 change board[5][1] to 5 349|618|527| 512|437| 8 | 876|592|413| ----------- 8 | 5 | 4 | 264|183|795| 5 | 2 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=28 next square candidates (5,2) slot 28 change board[5][2] to 7 349|618|527| 512|437| 8 | 876|592|413| ----------- 8 | 5 | 4 | 264|183|795| 57| 2 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=29 next square candidates (3,2) slot 29 change board[3][2] to 3 349|618|527| 512|437| 8 | 876|592|413| ----------- 83| 5 | 4 | 264|183|795| 57| 2 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=30 next square candidates (5,3) slot 30 change board[5][3] to 9 349|618|527| 512|437| 8 | 876|592|413| ----------- 83| 5 | 4 | 264|183|795| 57|92 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=31 next square candidates (3,3) slot 31 change board[3][3] to 7 349|618|527| 512|437| 8 | 876|592|413| ----------- 83|75 | 4 | 264|183|795| 57|92 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=32 next square candidates (3,5) slot 32 change board[3][5] to 6 349|618|527| 512|437| 8 | 876|592|413| ----------- 83|756| 4 | 264|183|795| 57|92 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=33 next square candidates (3,8) slot 33 change board[3][8] to 1 349|618|527| 512|437| 8 | 876|592|413| ----------- 83|756| 41| 264|183|795| 57|92 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=34 next square candidates (3,0) slot 34 change board[3][0] to 9 349|618|527| 512|437| 8 | 876|592|413| ----------- 983|756| 41| 264|183|795| 57|92 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=35 next square candidates (3,6) slot 35 change board[3][6] to 2 349|618|527| 512|437| 8 | 876|592|413| ----------- 983|756|241| 264|183|795| 57|92 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=36 next square candidates (5,0) slot 36 change board[5][0] to 1 349|618|527| 512|437| 8 | 876|592|413| ----------- 983|756|241| 264|183|795| 157|92 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=37 next square candidates (5,5) slot 37 change board[5][5] to 4 349|618|527| 512|437| 8 | 876|592|413| ----------- 983|756|241| 264|183|795| 157|924| 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=38 next square candidates (5,8) slot 38 change board[5][8] to 6 349|618|527| 512|437| 8 | 876|592|413| ----------- 983|756|241| 264|183|795| 157|924| 36| ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=39 next square candidates (1,8) slot 39 change board[1][8] to 9 349|618|527| 512|437| 89| 876|592|413| ----------- 983|756|241| 264|183|795| 157|924| 36| ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=40 next square candidates (1,6) slot 40 change board[1][6] to 6 349|618|527| 512|437|689| 876|592|413| ----------- 983|756|241| 264|183|795| 157|924| 36| ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=41 next square candidates (5,6) slot 41 change board[5][6] to 8 349|618|527| 512|437|689| 876|592|413| ----------- 983|756|241| 264|183|795| 157|924|836| ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=42 next square candidates (6,0) slot 42 change board[6][0] to 6 349|618|527| 512|437|689| 876|592|413| ----------- 983|756|241| 264|183|795| 157|924|836| ----------- 6 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=43 next square candidates (6,3) slot 43 change board[6][3] to 2 349|618|527| 512|437|689| 876|592|413| ----------- 983|756|241| 264|183|795| 157|924|836| ----------- 6 1|24 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=44 next square candidates (6,1) slot 44 change board[6][1] to 3 349|618|527| 512|437|689| 876|592|413| ----------- 983|756|241| 264|183|795| 157|924|836| ----------- 631|24 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=45 next square candidates (6,5) slot 45 change board[6][5] to 9 349|618|527| 512|437|689| 876|592|413| ----------- 983|756|241| 264|183|795| 157|924|836| ----------- 631|249| 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=46 next square candidates (-1,-1) slot 46 clear board[6][5] to make freecount=13 clear board[6][1] to make freecount=14 clear board[6][3] to make freecount=15 clear board[6][0] to make freecount=16 clear board[5][6] to make freecount=17 clear board[1][6] to make freecount=18 clear board[1][8] to make freecount=19 clear board[5][8] to make freecount=20 clear board[5][5] to make freecount=21 clear board[5][0] to make freecount=22 clear board[3][6] to make freecount=23 clear board[3][0] to make freecount=24 clear board[3][8] to make freecount=25 clear board[3][5] to make freecount=26 clear board[3][3] to make freecount=27 clear board[5][3] to make freecount=28 clear board[3][2] to make freecount=29 clear board[5][2] to make freecount=30 clear board[5][1] to make freecount=31 clear board[7][1] to make freecount=32 clear board[3][7] to make freecount=33 clear board[0][6] to make freecount=34 clear board[0][7] to make freecount=35 clear board[7][7] to make freecount=36 clear board[1][7] to make freecount=37 clear board[8][7] to make freecount=38 clear board[0][8] to make freecount=39 clear board[4][8] to make freecount=40 clear board[4][5] to make freecount=41 clear board[4][0] to make freecount=42 clear board[4][3] to make freecount=43 clear board[4][4] to make freecount=44 clear board[2][8] to make freecount=45 clear board[2][7] to make freecount=46 clear board[2][3] to make freecount=47 clear board[1][1] to make freecount=48 clear board[1][2] to make freecount=49 clear board[2][2] to make freecount=50 clear board[1][3] to make freecount=51 clear board[2][5] to make freecount=52 clear board[1][4] to make freecount=53 clear board[0][5] to make freecount=54 clear board[0][1] to make freecount=55 clear board[0][4] to make freecount=56 change board[0][4] to 8 3 9|68 | | 5 | 7| | 87 | 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=3 next square candidates (1,2) slot 3 change board[1][2] to 2 3 9|68 | | 5 2| 7| | 87 | 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=4 next square candidates (2,2) slot 4 change board[2][2] to 6 3 9|68 | | 5 2| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=5 next square candidates (0,1) slot 5 change board[0][1] to 1 319|68 | | 5 2| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=6 next square candidates (1,1) slot 6 change board[1][1] to 4 319|68 | | 542| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=7 next square candidates (1,3) slot 7 change board[1][3] to 1 319|68 | | 542|1 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=8 next square candidates (1,4) slot 8 change board[1][4] to 3 319|68 | | 542|137| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=9 next square candidates (2,5) slot 9 change board[2][5] to 2 319|68 | | 542|137| | 876| 92|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=10 next square candidates (0,5) slot 10 change board[0][5] to 4 319|684| | 542|137| | 876| 92|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=11 next square candidates (2,3) slot 11 change board[2][3] to 5 319|684| | 542|137| | 876|592|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=12 next square candidates (2,7) slot 12 change board[2][7] to 1 319|684| | 542|137| | 876|592|41 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=13 next square candidates (2,8) slot 13 change board[2][8] to 3 319|684| | 542|137| | 876|592|413| ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=14 next square candidates (4,3) slot 14 change board[4][3] to 8 319|684| | 542|137| | 876|592|413| ----------- 8 | 5 | | 64|8 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=15 next square candidates (4,4) slot 15 change board[4][4] to 1 319|684| | 542|137| | 876|592|413| ----------- 8 | 5 | | 64|81 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=16 next square candidates (4,0) slot 16 change board[4][0] to 2 319|684| | 542|137| | 876|592|413| ----------- 8 | 5 | | 264|81 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=17 next square candidates (4,5) slot 17 change board[4][5] to 3 319|684| | 542|137| | 876|592|413| ----------- 8 | 5 | | 264|813|79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=18 next square candidates (4,8) slot 18 change board[4][8] to 5 319|684| | 542|137| | 876|592|413| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (0,8) slot 19 change board[0][8] to 7 319|684| 7| 542|137| | 876|592|413| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (8,7) slot 20 change board[8][7] to 6 319|684| 7| 542|137| | 876|592|413| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 64| ----------- construct_candidates k=21 next square candidates (1,7) slot 21 change board[1][7] to 8 319|684| 7| 542|137| 8 | 876|592|413| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 64| ----------- construct_candidates k=22 next square candidates (7,7) slot 22 change board[7][7] to 5 319|684| 7| 542|137| 8 | 876|592|413| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 52| | 5| 64| ----------- construct_candidates k=23 next square candidates (0,7) slot 23 change board[0][7] to 2 319|684| 27| 542|137| 8 | 876|592|413| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 52| | 5| 64| ----------- construct_candidates k=24 next square candidates (0,6) slot 24 change board[0][6] to 5 319|684|527| 542|137| 8 | 876|592|413| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 52| | 5| 64| ----------- construct_candidates k=25 next square candidates (3,7) slot 25 change board[3][7] to 4 319|684|527| 542|137| 8 | 876|592|413| ----------- 8 | 5 | 4 | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 52| | 5| 64| ----------- construct_candidates k=26 next square candidates (7,1) slot 26 change board[7][1] to 9 319|684|527| 542|137| 8 | 876|592|413| ----------- 8 | 5 | 4 | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=27 next square candidates (5,1) slot 27 change board[5][1] to 5 319|684|527| 542|137| 8 | 876|592|413| ----------- 8 | 5 | 4 | 264|813|795| 5 | 2 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=28 next square candidates (5,2) slot 28 change board[5][2] to 7 319|684|527| 542|137| 8 | 876|592|413| ----------- 8 | 5 | 4 | 264|813|795| 57| 2 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=29 next square candidates (3,2) slot 29 change board[3][2] to 3 319|684|527| 542|137| 8 | 876|592|413| ----------- 83| 5 | 4 | 264|813|795| 57| 2 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=30 next square candidates (6,0) slot 30 change board[6][0] to 6 319|684|527| 542|137| 8 | 876|592|413| ----------- 83| 5 | 4 | 264|813|795| 57| 2 | 3 | ----------- 6 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=31 next square candidates (6,5) slot 31 change board[6][5] to 9 319|684|527| 542|137| 8 | 876|592|413| ----------- 83| 5 | 4 | 264|813|795| 57| 2 | 3 | ----------- 6 1| 49| 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=32 next square candidates (3,5) slot 32 change board[3][5] to 6 319|684|527| 542|137| 8 | 876|592|413| ----------- 83| 56| 4 | 264|813|795| 57| 2 | 3 | ----------- 6 1| 49| 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=33 next square candidates (-1,-1) slot 33 clear board[3][5] to make freecount=26 clear board[6][5] to make freecount=27 clear board[6][0] to make freecount=28 clear board[3][2] to make freecount=29 clear board[5][2] to make freecount=30 clear board[5][1] to make freecount=31 clear board[7][1] to make freecount=32 clear board[3][7] to make freecount=33 clear board[0][6] to make freecount=34 clear board[0][7] to make freecount=35 clear board[7][7] to make freecount=36 clear board[1][7] to make freecount=37 clear board[8][7] to make freecount=38 clear board[0][8] to make freecount=39 clear board[4][8] to make freecount=40 clear board[4][5] to make freecount=41 clear board[4][0] to make freecount=42 clear board[4][4] to make freecount=43 clear board[4][3] to make freecount=44 clear board[2][8] to make freecount=45 clear board[2][7] to make freecount=46 clear board[2][3] to make freecount=47 clear board[0][5] to make freecount=48 clear board[2][5] to make freecount=49 clear board[1][4] to make freecount=50 clear board[1][3] to make freecount=51 clear board[1][1] to make freecount=52 clear board[0][1] to make freecount=53 change board[0][1] to 4 349|68 | | 5 2| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=6 next square candidates (1,1) slot 6 change board[1][1] to 1 349|68 | | 512| 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=7 next square candidates (1,3) slot 7 change board[1][3] to 4 349|68 | | 512|4 7| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=8 next square candidates (1,4) slot 8 change board[1][4] to 3 349|68 | | 512|437| | 876| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=9 next square candidates (4,4) slot 9 change board[4][4] to 1 349|68 | | 512|437| | 876| 9 |4 | ----------- 8 | 5 | | 64| 1 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=10 next square candidates (4,0) slot 10 change board[4][0] to 2 349|68 | | 512|437| | 876| 9 |4 | ----------- 8 | 5 | | 264| 1 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=11 next square candidates (4,3) slot 11 change board[4][3] to 8 349|68 | | 512|437| | 876| 9 |4 | ----------- 8 | 5 | | 264|81 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=12 next square candidates (4,5) slot 12 change board[4][5] to 3 349|68 | | 512|437| | 876| 9 |4 | ----------- 8 | 5 | | 264|813|79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=13 next square candidates (4,8) slot 13 change board[4][8] to 5 349|68 | | 512|437| | 876| 9 |4 | ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=14 next square candidates (0,5) slot 14 change board[0][5] to 1 349|681| | 512|437| | 876| 9 |4 | ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=15 next square candidates (0,8) slot 15 change board[0][8] to 7 349|681| 7| 512|437| | 876| 9 |4 | ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=16 next square candidates (2,5) slot 16 change board[2][5] to 2 349|681| 7| 512|437| | 876| 92|4 | ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=17 next square candidates (2,3) slot 17 change board[2][3] to 5 349|681| 7| 512|437| | 876|592|4 | ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=18 next square candidates (2,7) slot 18 change board[2][7] to 1 349|681| 7| 512|437| | 876|592|41 | ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (2,8) slot 19 change board[2][8] to 3 349|681| 7| 512|437| | 876|592|413| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (8,7) slot 20 change board[8][7] to 6 349|681| 7| 512|437| | 876|592|413| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 64| ----------- construct_candidates k=21 next square candidates (1,7) slot 21 change board[1][7] to 8 349|681| 7| 512|437| 8 | 876|592|413| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 64| ----------- construct_candidates k=22 next square candidates (7,7) slot 22 change board[7][7] to 5 349|681| 7| 512|437| 8 | 876|592|413| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 52| | 5| 64| ----------- construct_candidates k=23 next square candidates (0,7) slot 23 change board[0][7] to 2 349|681| 27| 512|437| 8 | 876|592|413| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 52| | 5| 64| ----------- construct_candidates k=24 next square candidates (0,6) slot 24 change board[0][6] to 5 349|681|527| 512|437| 8 | 876|592|413| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 52| | 5| 64| ----------- construct_candidates k=25 next square candidates (3,7) slot 25 change board[3][7] to 4 349|681|527| 512|437| 8 | 876|592|413| ----------- 8 | 5 | 4 | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 52| | 5| 64| ----------- construct_candidates k=26 next square candidates (7,1) slot 26 change board[7][1] to 9 349|681|527| 512|437| 8 | 876|592|413| ----------- 8 | 5 | 4 | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=27 next square candidates (5,1) slot 27 change board[5][1] to 5 349|681|527| 512|437| 8 | 876|592|413| ----------- 8 | 5 | 4 | 264|813|795| 5 | 2 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=28 next square candidates (5,2) slot 28 change board[5][2] to 7 349|681|527| 512|437| 8 | 876|592|413| ----------- 8 | 5 | 4 | 264|813|795| 57| 2 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=29 next square candidates (3,2) slot 29 change board[3][2] to 3 349|681|527| 512|437| 8 | 876|592|413| ----------- 83| 5 | 4 | 264|813|795| 57| 2 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=30 next square candidates (5,3) slot 30 change board[5][3] to 9 349|681|527| 512|437| 8 | 876|592|413| ----------- 83| 5 | 4 | 264|813|795| 57|92 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=31 next square candidates (3,3) slot 31 change board[3][3] to 7 349|681|527| 512|437| 8 | 876|592|413| ----------- 83|75 | 4 | 264|813|795| 57|92 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=32 next square candidates (3,5) slot 32 change board[3][5] to 6 349|681|527| 512|437| 8 | 876|592|413| ----------- 83|756| 4 | 264|813|795| 57|92 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=33 next square candidates (3,8) slot 33 change board[3][8] to 1 349|681|527| 512|437| 8 | 876|592|413| ----------- 83|756| 41| 264|813|795| 57|92 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=34 next square candidates (3,0) slot 34 change board[3][0] to 9 349|681|527| 512|437| 8 | 876|592|413| ----------- 983|756| 41| 264|813|795| 57|92 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=35 next square candidates (3,6) slot 35 change board[3][6] to 2 349|681|527| 512|437| 8 | 876|592|413| ----------- 983|756|241| 264|813|795| 57|92 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=36 next square candidates (5,0) slot 36 change board[5][0] to 1 349|681|527| 512|437| 8 | 876|592|413| ----------- 983|756|241| 264|813|795| 157|92 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=37 next square candidates (5,5) slot 37 change board[5][5] to 4 349|681|527| 512|437| 8 | 876|592|413| ----------- 983|756|241| 264|813|795| 157|924| 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=38 next square candidates (5,8) slot 38 change board[5][8] to 6 349|681|527| 512|437| 8 | 876|592|413| ----------- 983|756|241| 264|813|795| 157|924| 36| ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=39 next square candidates (1,8) slot 39 change board[1][8] to 9 349|681|527| 512|437| 89| 876|592|413| ----------- 983|756|241| 264|813|795| 157|924| 36| ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=40 next square candidates (1,6) slot 40 change board[1][6] to 6 349|681|527| 512|437|689| 876|592|413| ----------- 983|756|241| 264|813|795| 157|924| 36| ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=41 next square candidates (5,6) slot 41 change board[5][6] to 8 349|681|527| 512|437|689| 876|592|413| ----------- 983|756|241| 264|813|795| 157|924|836| ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=42 next square candidates (6,0) slot 42 change board[6][0] to 6 349|681|527| 512|437|689| 876|592|413| ----------- 983|756|241| 264|813|795| 157|924|836| ----------- 6 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=43 next square candidates (6,3) slot 43 change board[6][3] to 2 349|681|527| 512|437|689| 876|592|413| ----------- 983|756|241| 264|813|795| 157|924|836| ----------- 6 1|24 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=44 next square candidates (6,1) slot 44 change board[6][1] to 3 349|681|527| 512|437|689| 876|592|413| ----------- 983|756|241| 264|813|795| 157|924|836| ----------- 631|24 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=45 next square candidates (6,5) slot 45 change board[6][5] to 9 349|681|527| 512|437|689| 876|592|413| ----------- 983|756|241| 264|813|795| 157|924|836| ----------- 631|249| 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=46 next square candidates (-1,-1) slot 46 clear board[6][5] to make freecount=13 clear board[6][1] to make freecount=14 clear board[6][3] to make freecount=15 clear board[6][0] to make freecount=16 clear board[5][6] to make freecount=17 clear board[1][6] to make freecount=18 clear board[1][8] to make freecount=19 clear board[5][8] to make freecount=20 clear board[5][5] to make freecount=21 clear board[5][0] to make freecount=22 clear board[3][6] to make freecount=23 clear board[3][0] to make freecount=24 clear board[3][8] to make freecount=25 clear board[3][5] to make freecount=26 clear board[3][3] to make freecount=27 clear board[5][3] to make freecount=28 clear board[3][2] to make freecount=29 clear board[5][2] to make freecount=30 clear board[5][1] to make freecount=31 clear board[7][1] to make freecount=32 clear board[3][7] to make freecount=33 clear board[0][6] to make freecount=34 clear board[0][7] to make freecount=35 clear board[7][7] to make freecount=36 clear board[1][7] to make freecount=37 clear board[8][7] to make freecount=38 clear board[2][8] to make freecount=39 clear board[2][7] to make freecount=40 clear board[2][3] to make freecount=41 clear board[2][5] to make freecount=42 clear board[0][8] to make freecount=43 clear board[0][5] to make freecount=44 change board[0][5] to 2 349|682| | 512|437| | 876| 9 |4 | ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=15 next square candidates (2,5) slot 15 change board[2][5] to 1 349|682| | 512|437| | 876| 91|4 | ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=16 next square candidates (2,3) slot 16 change board[2][3] to 5 349|682| | 512|437| | 876|591|4 | ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=17 next square candidates (2,7) slot 17 change board[2][7] to 2 349|682| | 512|437| | 876|591|42 | ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=18 next square candidates (2,8) slot 18 change board[2][8] to 3 349|682| | 512|437| | 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (0,6) slot 19 change board[0][6] to 1 349|682|1 | 512|437| | 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (0,7) slot 20 change board[0][7] to 5 349|682|15 | 512|437| | 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (0,8) slot 21 change board[0][8] to 7 349|682|157| 512|437| | 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (1,7) slot 22 change board[1][7] to 6 349|682|157| 512|437| 6 | 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (1,8) slot 23 change board[1][8] to 9 349|682|157| 512|437| 69| 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=24 next square candidates (1,6) slot 24 change board[1][6] to 8 349|682|157| 512|437|869| 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=25 next square candidates (5,6) slot 25 change board[5][6] to 6 349|682|157| 512|437|869| 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 |63 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=26 next square candidates (3,6) slot 26 change board[3][6] to 2 349|682|157| 512|437|869| 876|591|423| ----------- 8 | 5 |2 | 264|813|795| | 2 |63 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=27 next square candidates (3,8) slot 27 change board[3][8] to 1 349|682|157| 512|437|869| 876|591|423| ----------- 8 | 5 |2 1| 264|813|795| | 2 |63 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=28 next square candidates (-1,-1) slot 28 clear board[3][8] to make freecount=31 clear board[3][6] to make freecount=32 clear board[5][6] to make freecount=33 clear board[1][6] to make freecount=34 clear board[1][8] to make freecount=35 clear board[1][7] to make freecount=36 change board[1][7] to 8 349|682|157| 512|437| 8 | 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (1,6) slot 23 change board[1][6] to 6 349|682|157| 512|437|68 | 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=24 next square candidates (1,8) slot 24 change board[1][8] to 9 349|682|157| 512|437|689| 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=25 next square candidates (3,6) slot 25 change board[3][6] to 2 349|682|157| 512|437|689| 876|591|423| ----------- 8 | 5 |2 | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=26 next square candidates (5,6) slot 26 change board[5][6] to 8 349|682|157| 512|437|689| 876|591|423| ----------- 8 | 5 |2 | 264|813|795| | 2 |83 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=27 next square candidates (3,2) slot 27 change board[3][2] to 3 349|682|157| 512|437|689| 876|591|423| ----------- 83| 5 |2 | 264|813|795| | 2 |83 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=28 next square candidates (3,3) slot 28 change board[3][3] to 7 349|682|157| 512|437|689| 876|591|423| ----------- 83|75 |2 | 264|813|795| | 2 |83 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=29 next square candidates (5,3) slot 29 change board[5][3] to 9 349|682|157| 512|437|689| 876|591|423| ----------- 83|75 |2 | 264|813|795| |92 |83 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=30 next square candidates (5,1) slot 30 change board[5][1] to 5 349|682|157| 512|437|689| 876|591|423| ----------- 83|75 |2 | 264|813|795| 5 |92 |83 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=31 next square candidates (5,2) slot 31 change board[5][2] to 7 349|682|157| 512|437|689| 876|591|423| ----------- 83|75 |2 | 264|813|795| 57|92 |83 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=32 next square candidates (5,0) slot 32 change board[5][0] to 1 349|682|157| 512|437|689| 876|591|423| ----------- 83|75 |2 | 264|813|795| 157|92 |83 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=33 next square candidates (3,0) slot 33 change board[3][0] to 9 349|682|157| 512|437|689| 876|591|423| ----------- 983|75 |2 | 264|813|795| 157|92 |83 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=34 next square candidates (5,8) slot 34 change board[5][8] to 6 349|682|157| 512|437|689| 876|591|423| ----------- 983|75 |2 | 264|813|795| 157|92 |836| ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=35 next square candidates (3,8) slot 35 change board[3][8] to 1 349|682|157| 512|437|689| 876|591|423| ----------- 983|75 |2 1| 264|813|795| 157|92 |836| ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=36 next square candidates (3,7) slot 36 change board[3][7] to 4 349|682|157| 512|437|689| 876|591|423| ----------- 983|75 |241| 264|813|795| 157|92 |836| ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=37 next square candidates (3,5) slot 37 change board[3][5] to 6 349|682|157| 512|437|689| 876|591|423| ----------- 983|756|241| 264|813|795| 157|92 |836| ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=38 next square candidates (5,5) slot 38 change board[5][5] to 4 349|682|157| 512|437|689| 876|591|423| ----------- 983|756|241| 264|813|795| 157|924|836| ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=39 next square candidates (6,0) slot 39 change board[6][0] to 6 349|682|157| 512|437|689| 876|591|423| ----------- 983|756|241| 264|813|795| 157|924|836| ----------- 6 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=40 next square candidates (6,3) slot 40 change board[6][3] to 2 349|682|157| 512|437|689| 876|591|423| ----------- 983|756|241| 264|813|795| 157|924|836| ----------- 6 1|24 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=41 next square candidates (6,5) slot 41 change board[6][5] to 9 349|682|157| 512|437|689| 876|591|423| ----------- 983|756|241| 264|813|795| 157|924|836| ----------- 6 1|249| 78| |3 | 2| | 5| 4| ----------- construct_candidates k=42 next square candidates (6,1) slot 42 change board[6][1] to 3 349|682|157| 512|437|689| 876|591|423| ----------- 983|756|241| 264|813|795| 157|924|836| ----------- 631|249| 78| |3 | 2| | 5| 4| ----------- construct_candidates k=43 next square candidates (6,6) slot 43 change board[6][6] to 5 349|682|157| 512|437|689| 876|591|423| ----------- 983|756|241| 264|813|795| 157|924|836| ----------- 631|249|578| |3 | 2| | 5| 4| ----------- construct_candidates k=44 next square candidates (7,1) slot 44 change board[7][1] to 9 349|682|157| 512|437|689| 876|591|423| ----------- 983|756|241| 264|813|795| 157|924|836| ----------- 631|249|578| 9 |3 | 2| | 5| 4| ----------- construct_candidates k=45 next square candidates (-1,-1) slot 45 clear board[7][1] to make freecount=14 clear board[6][6] to make freecount=15 clear board[6][1] to make freecount=16 clear board[6][5] to make freecount=17 clear board[6][3] to make freecount=18 clear board[6][0] to make freecount=19 clear board[5][5] to make freecount=20 clear board[3][5] to make freecount=21 clear board[3][7] to make freecount=22 clear board[3][8] to make freecount=23 clear board[5][8] to make freecount=24 clear board[3][0] to make freecount=25 clear board[5][0] to make freecount=26 clear board[5][2] to make freecount=27 clear board[5][1] to make freecount=28 clear board[5][3] to make freecount=29 clear board[3][3] to make freecount=30 change board[3][3] to 9 349|682|157| 512|437|689| 876|591|423| ----------- 83|95 |2 | 264|813|795| | 2 |83 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=29 next square candidates (5,3) slot 29 change board[5][3] to 7 349|682|157| 512|437|689| 876|591|423| ----------- 83|95 |2 | 264|813|795| |72 |83 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=30 next square candidates (5,2) slot 30 change board[5][2] to 5 349|682|157| 512|437|689| 876|591|423| ----------- 83|95 |2 | 264|813|795| 5|72 |83 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=31 next square candidates (5,1) slot 31 change board[5][1] to 9 349|682|157| 512|437|689| 876|591|423| ----------- 83|95 |2 | 264|813|795| 95|72 |83 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=32 next square candidates (5,0) slot 32 change board[5][0] to 1 349|682|157| 512|437|689| 876|591|423| ----------- 83|95 |2 | 264|813|795| 195|72 |83 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=33 next square candidates (3,0) slot 33 change board[3][0] to 7 349|682|157| 512|437|689| 876|591|423| ----------- 783|95 |2 | 264|813|795| 195|72 |83 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=34 next square candidates (5,8) slot 34 change board[5][8] to 6 349|682|157| 512|437|689| 876|591|423| ----------- 783|95 |2 | 264|813|795| 195|72 |836| ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=35 next square candidates (3,8) slot 35 change board[3][8] to 1 349|682|157| 512|437|689| 876|591|423| ----------- 783|95 |2 1| 264|813|795| 195|72 |836| ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=36 next square candidates (3,7) slot 36 change board[3][7] to 4 349|682|157| 512|437|689| 876|591|423| ----------- 783|95 |241| 264|813|795| 195|72 |836| ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=37 next square candidates (3,5) slot 37 change board[3][5] to 6 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|72 |836| ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=38 next square candidates (5,5) slot 38 change board[5][5] to 4 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|724|836| ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=39 next square candidates (6,3) slot 39 change board[6][3] to 2 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|724|836| ----------- 1|24 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=40 next square candidates (6,5) slot 40 change board[6][5] to 9 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|724|836| ----------- 1|249| 78| |3 | 2| | 5| 4| ----------- construct_candidates k=41 next square candidates (6,0) slot 41 change board[6][0] to 6 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|724|836| ----------- 6 1|249| 78| |3 | 2| | 5| 4| ----------- construct_candidates k=42 next square candidates (7,1) slot 42 change board[7][1] to 5 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|724|836| ----------- 6 1|249| 78| 5 |3 | 2| | 5| 4| ----------- construct_candidates k=43 next square candidates (6,1) slot 43 change board[6][1] to 3 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|724|836| ----------- 631|249| 78| 5 |3 | 2| | 5| 4| ----------- construct_candidates k=44 next square candidates (6,6) slot 44 change board[6][6] to 5 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|724|836| ----------- 631|249|578| 5 |3 | 2| | 5| 4| ----------- construct_candidates k=45 next square candidates (7,5) slot 45 change board[7][5] to 8 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|724|836| ----------- 631|249|578| 5 |3 8| 2| | 5| 4| ----------- construct_candidates k=46 next square candidates (7,2) slot 46 change board[7][2] to 7 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|724|836| ----------- 631|249|578| 57|3 8| 2| | 5| 4| ----------- construct_candidates k=47 next square candidates (7,4) slot 47 change board[7][4] to 6 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|724|836| ----------- 631|249|578| 57|368| 2| | 5| 4| ----------- construct_candidates k=48 next square candidates (7,6) slot 48 change board[7][6] to 9 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|724|836| ----------- 631|249|578| 57|368|9 2| | 5| 4| ----------- construct_candidates k=49 next square candidates (7,0) slot 49 change board[7][0] to 4 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|724|836| ----------- 631|249|578| 457|368|9 2| | 5| 4| ----------- construct_candidates k=50 next square candidates (7,7) slot 50 change board[7][7] to 1 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|724|836| ----------- 631|249|578| 457|368|912| | 5| 4| ----------- construct_candidates k=51 next square candidates (8,0) slot 51 change board[8][0] to 9 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|724|836| ----------- 631|249|578| 457|368|912| 9 | 5| 4| ----------- construct_candidates k=52 next square candidates (8,1) slot 52 change board[8][1] to 2 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|724|836| ----------- 631|249|578| 457|368|912| 92 | 5| 4| ----------- construct_candidates k=53 next square candidates (8,2) slot 53 change board[8][2] to 8 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|724|836| ----------- 631|249|578| 457|368|912| 928| 5| 4| ----------- construct_candidates k=54 next square candidates (8,3) slot 54 change board[8][3] to 1 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|724|836| ----------- 631|249|578| 457|368|912| 928|1 5| 4| ----------- construct_candidates k=55 next square candidates (8,4) slot 55 change board[8][4] to 7 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|724|836| ----------- 631|249|578| 457|368|912| 928|175| 4| ----------- construct_candidates k=56 next square candidates (8,6) slot 56 change board[8][6] to 3 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|724|836| ----------- 631|249|578| 457|368|912| 928|175|3 4| ----------- construct_candidates k=57 next square candidates (8,7) slot 57 change board[8][7] to 6 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|724|836| ----------- 631|249|578| 457|368|912| 928|175|364| ----------- solution found! process solution 349|682|157| 512|437|689| 876|591|423| ----------- 783|956|241| 264|813|795| 195|724|836| ----------- 631|249|578| 457|368|912| 928|175|364| ----------- clear board[8][7] to make freecount=1 clear board[8][6] to make freecount=2 clear board[8][4] to make freecount=3 clear board[8][3] to make freecount=4 clear board[8][2] to make freecount=5 clear board[8][1] to make freecount=6 clear board[8][0] to make freecount=7 clear board[7][7] to make freecount=8 clear board[7][0] to make freecount=9 clear board[7][6] to make freecount=10 clear board[7][4] to make freecount=11 clear board[7][2] to make freecount=12 clear board[7][5] to make freecount=13 clear board[6][6] to make freecount=14 clear board[6][1] to make freecount=15 clear board[7][1] to make freecount=16 clear board[6][0] to make freecount=17 clear board[6][5] to make freecount=18 clear board[6][3] to make freecount=19 clear board[5][5] to make freecount=20 clear board[3][5] to make freecount=21 clear board[3][7] to make freecount=22 clear board[3][8] to make freecount=23 clear board[5][8] to make freecount=24 clear board[3][0] to make freecount=25 clear board[5][0] to make freecount=26 clear board[5][1] to make freecount=27 clear board[5][2] to make freecount=28 clear board[5][3] to make freecount=29 clear board[3][3] to make freecount=30 clear board[3][2] to make freecount=31 change board[3][2] to 7 349|682|157| 512|437|689| 876|591|423| ----------- 87| 5 |2 | 264|813|795| | 2 |83 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=28 next square candidates (3,3) slot 28 change board[3][3] to 9 349|682|157| 512|437|689| 876|591|423| ----------- 87|95 |2 | 264|813|795| | 2 |83 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=29 next square candidates (3,0) slot 29 change board[3][0] to 1 349|682|157| 512|437|689| 876|591|423| ----------- 187|95 |2 | 264|813|795| | 2 |83 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=30 next square candidates (3,8) slot 30 change board[3][8] to 6 349|682|157| 512|437|689| 876|591|423| ----------- 187|95 |2 6| 264|813|795| | 2 |83 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=31 next square candidates (3,5) slot 31 change board[3][5] to 4 349|682|157| 512|437|689| 876|591|423| ----------- 187|954|2 6| 264|813|795| | 2 |83 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=32 next square candidates (-1,-1) slot 32 clear board[3][5] to make freecount=27 clear board[3][8] to make freecount=28 clear board[3][0] to make freecount=29 clear board[3][3] to make freecount=30 clear board[3][2] to make freecount=31 clear board[5][6] to make freecount=32 clear board[3][6] to make freecount=33 clear board[1][8] to make freecount=34 clear board[1][6] to make freecount=35 change board[1][6] to 9 349|682|157| 512|437|98 | 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=24 next square candidates (1,8) slot 24 change board[1][8] to 6 349|682|157| 512|437|986| 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=25 next square candidates (3,8) slot 25 change board[3][8] to 1 349|682|157| 512|437|986| 876|591|423| ----------- 8 | 5 | 1| 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=26 next square candidates (-1,-1) slot 26 clear board[3][8] to make freecount=33 clear board[1][8] to make freecount=34 clear board[1][6] to make freecount=35 clear board[1][7] to make freecount=36 clear board[0][8] to make freecount=37 clear board[0][7] to make freecount=38 clear board[0][6] to make freecount=39 change board[0][6] to 5 349|682|5 | 512|437| | 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (0,7) slot 20 change board[0][7] to 1 349|682|51 | 512|437| | 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (0,8) slot 21 change board[0][8] to 7 349|682|517| 512|437| | 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (8,7) slot 22 change board[8][7] to 6 349|682|517| 512|437| | 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 64| ----------- construct_candidates k=23 next square candidates (1,7) slot 23 change board[1][7] to 8 349|682|517| 512|437| 8 | 876|591|423| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 64| ----------- construct_candidates k=24 next square candidates (3,7) slot 24 change board[3][7] to 4 349|682|517| 512|437| 8 | 876|591|423| ----------- 8 | 5 | 4 | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 64| ----------- construct_candidates k=25 next square candidates (7,7) slot 25 change board[7][7] to 5 349|682|517| 512|437| 8 | 876|591|423| ----------- 8 | 5 | 4 | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 52| | 5| 64| ----------- construct_candidates k=26 next square candidates (7,1) slot 26 change board[7][1] to 9 349|682|517| 512|437| 8 | 876|591|423| ----------- 8 | 5 | 4 | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=27 next square candidates (5,1) slot 27 change board[5][1] to 5 349|682|517| 512|437| 8 | 876|591|423| ----------- 8 | 5 | 4 | 264|813|795| 5 | 2 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=28 next square candidates (5,2) slot 28 change board[5][2] to 7 349|682|517| 512|437| 8 | 876|591|423| ----------- 8 | 5 | 4 | 264|813|795| 57| 2 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=29 next square candidates (3,2) slot 29 change board[3][2] to 3 349|682|517| 512|437| 8 | 876|591|423| ----------- 83| 5 | 4 | 264|813|795| 57| 2 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=30 next square candidates (5,3) slot 30 change board[5][3] to 9 349|682|517| 512|437| 8 | 876|591|423| ----------- 83| 5 | 4 | 264|813|795| 57|92 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=31 next square candidates (3,3) slot 31 change board[3][3] to 7 349|682|517| 512|437| 8 | 876|591|423| ----------- 83|75 | 4 | 264|813|795| 57|92 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=32 next square candidates (3,5) slot 32 change board[3][5] to 6 349|682|517| 512|437| 8 | 876|591|423| ----------- 83|756| 4 | 264|813|795| 57|92 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=33 next square candidates (3,8) slot 33 change board[3][8] to 1 349|682|517| 512|437| 8 | 876|591|423| ----------- 83|756| 41| 264|813|795| 57|92 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=34 next square candidates (3,0) slot 34 change board[3][0] to 9 349|682|517| 512|437| 8 | 876|591|423| ----------- 983|756| 41| 264|813|795| 57|92 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=35 next square candidates (3,6) slot 35 change board[3][6] to 2 349|682|517| 512|437| 8 | 876|591|423| ----------- 983|756|241| 264|813|795| 57|92 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=36 next square candidates (5,0) slot 36 change board[5][0] to 1 349|682|517| 512|437| 8 | 876|591|423| ----------- 983|756|241| 264|813|795| 157|92 | 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=37 next square candidates (5,5) slot 37 change board[5][5] to 4 349|682|517| 512|437| 8 | 876|591|423| ----------- 983|756|241| 264|813|795| 157|924| 3 | ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=38 next square candidates (5,8) slot 38 change board[5][8] to 6 349|682|517| 512|437| 8 | 876|591|423| ----------- 983|756|241| 264|813|795| 157|924| 36| ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=39 next square candidates (1,8) slot 39 change board[1][8] to 9 349|682|517| 512|437| 89| 876|591|423| ----------- 983|756|241| 264|813|795| 157|924| 36| ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=40 next square candidates (1,6) slot 40 change board[1][6] to 6 349|682|517| 512|437|689| 876|591|423| ----------- 983|756|241| 264|813|795| 157|924| 36| ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=41 next square candidates (5,6) slot 41 change board[5][6] to 8 349|682|517| 512|437|689| 876|591|423| ----------- 983|756|241| 264|813|795| 157|924|836| ----------- 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=42 next square candidates (6,0) slot 42 change board[6][0] to 6 349|682|517| 512|437|689| 876|591|423| ----------- 983|756|241| 264|813|795| 157|924|836| ----------- 6 1| 4 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=43 next square candidates (6,3) slot 43 change board[6][3] to 2 349|682|517| 512|437|689| 876|591|423| ----------- 983|756|241| 264|813|795| 157|924|836| ----------- 6 1|24 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=44 next square candidates (6,1) slot 44 change board[6][1] to 3 349|682|517| 512|437|689| 876|591|423| ----------- 983|756|241| 264|813|795| 157|924|836| ----------- 631|24 | 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=45 next square candidates (6,5) slot 45 change board[6][5] to 9 349|682|517| 512|437|689| 876|591|423| ----------- 983|756|241| 264|813|795| 157|924|836| ----------- 631|249| 78| 9 |3 | 52| | 5| 64| ----------- construct_candidates k=46 next square candidates (-1,-1) slot 46 clear board[6][5] to make freecount=13 clear board[6][1] to make freecount=14 clear board[6][3] to make freecount=15 clear board[6][0] to make freecount=16 clear board[5][6] to make freecount=17 clear board[1][6] to make freecount=18 clear board[1][8] to make freecount=19 clear board[5][8] to make freecount=20 clear board[5][5] to make freecount=21 clear board[5][0] to make freecount=22 clear board[3][6] to make freecount=23 clear board[3][0] to make freecount=24 clear board[3][8] to make freecount=25 clear board[3][5] to make freecount=26 clear board[3][3] to make freecount=27 clear board[5][3] to make freecount=28 clear board[3][2] to make freecount=29 clear board[5][2] to make freecount=30 clear board[5][1] to make freecount=31 clear board[7][1] to make freecount=32 clear board[7][7] to make freecount=33 clear board[3][7] to make freecount=34 clear board[1][7] to make freecount=35 clear board[8][7] to make freecount=36 clear board[0][8] to make freecount=37 clear board[0][7] to make freecount=38 clear board[0][6] to make freecount=39 clear board[2][8] to make freecount=40 clear board[2][7] to make freecount=41 clear board[2][3] to make freecount=42 clear board[2][5] to make freecount=43 clear board[0][5] to make freecount=44 clear board[4][8] to make freecount=45 clear board[4][5] to make freecount=46 clear board[4][3] to make freecount=47 clear board[4][0] to make freecount=48 clear board[4][4] to make freecount=49 clear board[1][4] to make freecount=50 clear board[1][3] to make freecount=51 clear board[1][1] to make freecount=52 clear board[0][1] to make freecount=53 clear board[2][2] to make freecount=54 clear board[1][2] to make freecount=55 change board[1][2] to 6 3 9|68 | | 5 6| 7| | 87 | 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=4 next square candidates (2,2) slot 4 change board[2][2] to 2 3 9|68 | | 5 6| 7| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=5 next square candidates (0,1) slot 5 change board[0][1] to 1 319|68 | | 5 6| 7| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=6 next square candidates (1,1) slot 6 change board[1][1] to 4 319|68 | | 546| 7| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=7 next square candidates (0,5) slot 7 change board[0][5] to 2 319|682| | 546| 7| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=8 next square candidates (0,6) slot 8 change board[0][6] to 5 319|682|5 | 546| 7| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=9 next square candidates (-1,-1) slot 9 clear board[0][6] to make freecount=50 clear board[0][5] to make freecount=51 change board[0][5] to 4 319|684| | 546| 7| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=8 next square candidates (0,6) slot 8 change board[0][6] to 2 319|684|2 | 546| 7| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=9 next square candidates (0,7) slot 9 change board[0][7] to 5 319|684|25 | 546| 7| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=10 next square candidates (0,8) slot 10 change board[0][8] to 7 319|684|257| 546| 7| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=11 next square candidates (1,3) slot 11 change board[1][3] to 1 319|684|257| 546|1 7| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=12 next square candidates (1,4) slot 12 change board[1][4] to 3 319|684|257| 546|137| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=13 next square candidates (-1,-1) slot 13 clear board[1][4] to make freecount=46 clear board[1][3] to make freecount=47 change board[1][3] to 2 319|684|257| 546|2 7| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=12 next square candidates (6,3) slot 12 change board[6][3] to 9 319|684|257| 546|2 7| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=13 next square candidates (1,4) slot 13 change board[1][4] to 1 319|684|257| 546|217| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=14 next square candidates (1,7) slot 14 change board[1][7] to 8 319|684|257| 546|217| 8 | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=15 next square candidates (2,3) slot 15 change board[2][3] to 5 319|684|257| 546|217| 8 | 872|59 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=16 next square candidates (2,5) slot 16 change board[2][5] to 3 319|684|257| 546|217| 8 | 872|593|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=17 next square candidates (4,4) slot 17 change board[4][4] to 3 319|684|257| 546|217| 8 | 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=18 next square candidates (1,6) slot 18 change board[1][6] to 3 319|684|257| 546|217|38 | 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (1,8) slot 19 change board[1][8] to 9 319|684|257| 546|217|389| 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (2,7) slot 20 change board[2][7] to 1 319|684|257| 546|217|389| 872|593|41 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (2,8) slot 21 change board[2][8] to 6 319|684|257| 546|217|389| 872|593|416| ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (3,8) slot 22 change board[3][8] to 1 319|684|257| 546|217|389| 872|593|416| ----------- 8 | 5 | 1| 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (3,6) slot 23 change board[3][6] to 6 319|684|257| 546|217|389| 872|593|416| ----------- 8 | 5 |6 1| 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=24 next square candidates (3,5) slot 24 change board[3][5] to 9 319|684|257| 546|217|389| 872|593|416| ----------- 8 | 59|6 1| 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=25 next square candidates (4,8) slot 25 change board[4][8] to 5 319|684|257| 546|217|389| 872|593|416| ----------- 8 | 59|6 1| 64| 3 |795| | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=26 next square candidates (-1,-1) slot 26 clear board[4][8] to make freecount=33 clear board[3][5] to make freecount=34 clear board[3][6] to make freecount=35 clear board[3][8] to make freecount=36 clear board[2][8] to make freecount=37 clear board[2][7] to make freecount=38 change board[2][7] to 6 319|684|257| 546|217|389| 872|593|46 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (2,8) slot 21 change board[2][8] to 1 319|684|257| 546|217|389| 872|593|461| ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (3,8) slot 22 change board[3][8] to 6 319|684|257| 546|217|389| 872|593|461| ----------- 8 | 5 | 6| 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (3,6) slot 23 change board[3][6] to 1 319|684|257| 546|217|389| 872|593|461| ----------- 8 | 5 |1 6| 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=24 next square candidates (3,5) slot 24 change board[3][5] to 9 319|684|257| 546|217|389| 872|593|461| ----------- 8 | 59|1 6| 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=25 next square candidates (4,8) slot 25 change board[4][8] to 5 319|684|257| 546|217|389| 872|593|461| ----------- 8 | 59|1 6| 64| 3 |795| | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=26 next square candidates (-1,-1) slot 26 clear board[4][8] to make freecount=33 clear board[3][5] to make freecount=34 clear board[3][6] to make freecount=35 clear board[3][8] to make freecount=36 clear board[2][8] to make freecount=37 clear board[2][7] to make freecount=38 clear board[1][8] to make freecount=39 clear board[1][6] to make freecount=40 change board[1][6] to 9 319|684|257| 546|217|98 | 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (1,8) slot 19 change board[1][8] to 3 319|684|257| 546|217|983| 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (2,7) slot 20 change board[2][7] to 1 319|684|257| 546|217|983| 872|593|41 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (2,8) slot 21 change board[2][8] to 6 319|684|257| 546|217|983| 872|593|416| ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (3,8) slot 22 change board[3][8] to 1 319|684|257| 546|217|983| 872|593|416| ----------- 8 | 5 | 1| 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (3,6) slot 23 change board[3][6] to 6 319|684|257| 546|217|983| 872|593|416| ----------- 8 | 5 |6 1| 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=24 next square candidates (3,5) slot 24 change board[3][5] to 9 319|684|257| 546|217|983| 872|593|416| ----------- 8 | 59|6 1| 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=25 next square candidates (4,8) slot 25 change board[4][8] to 5 319|684|257| 546|217|983| 872|593|416| ----------- 8 | 59|6 1| 64| 3 |795| | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=26 next square candidates (-1,-1) slot 26 clear board[4][8] to make freecount=33 clear board[3][5] to make freecount=34 clear board[3][6] to make freecount=35 clear board[3][8] to make freecount=36 clear board[2][8] to make freecount=37 clear board[2][7] to make freecount=38 change board[2][7] to 6 319|684|257| 546|217|983| 872|593|46 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (2,8) slot 21 change board[2][8] to 1 319|684|257| 546|217|983| 872|593|461| ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (3,8) slot 22 change board[3][8] to 6 319|684|257| 546|217|983| 872|593|461| ----------- 8 | 5 | 6| 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (3,6) slot 23 change board[3][6] to 1 319|684|257| 546|217|983| 872|593|461| ----------- 8 | 5 |1 6| 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=24 next square candidates (3,5) slot 24 change board[3][5] to 9 319|684|257| 546|217|983| 872|593|461| ----------- 8 | 59|1 6| 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=25 next square candidates (4,8) slot 25 change board[4][8] to 5 319|684|257| 546|217|983| 872|593|461| ----------- 8 | 59|1 6| 64| 3 |795| | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=26 next square candidates (-1,-1) slot 26 clear board[4][8] to make freecount=33 clear board[3][5] to make freecount=34 clear board[3][6] to make freecount=35 clear board[3][8] to make freecount=36 clear board[2][8] to make freecount=37 clear board[2][7] to make freecount=38 clear board[1][8] to make freecount=39 clear board[1][6] to make freecount=40 clear board[4][4] to make freecount=41 clear board[2][5] to make freecount=42 clear board[2][3] to make freecount=43 clear board[1][7] to make freecount=44 clear board[1][4] to make freecount=45 change board[1][4] to 3 319|684|257| 546|237| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=14 next square candidates (2,5) slot 14 change board[2][5] to 1 319|684|257| 546|237| | 872| 91|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=15 next square candidates (2,3) slot 15 change board[2][3] to 5 319|684|257| 546|237| | 872|591|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=16 next square candidates (2,7) slot 16 change board[2][7] to 6 319|684|257| 546|237| | 872|591|46 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=17 next square candidates (2,8) slot 17 change board[2][8] to 3 319|684|257| 546|237| | 872|591|463| ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=18 next square candidates (4,4) slot 18 change board[4][4] to 1 319|684|257| 546|237| | 872|591|463| ----------- 8 | 5 | | 64| 1 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (4,0) slot 19 change board[4][0] to 2 319|684|257| 546|237| | 872|591|463| ----------- 8 | 5 | | 264| 1 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (4,3) slot 20 change board[4][3] to 8 319|684|257| 546|237| | 872|591|463| ----------- 8 | 5 | | 264|81 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (4,5) slot 21 change board[4][5] to 3 319|684|257| 546|237| | 872|591|463| ----------- 8 | 5 | | 264|813|79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (4,8) slot 22 change board[4][8] to 5 319|684|257| 546|237| | 872|591|463| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (6,0) slot 23 change board[6][0] to 6 319|684|257| 546|237| | 872|591|463| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 6 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=24 next square candidates (6,5) slot 24 change board[6][5] to 2 319|684|257| 546|237| | 872|591|463| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 6 1|942| 78| |3 | 2| | 5| 4| ----------- construct_candidates k=25 next square candidates (7,7) slot 25 change board[7][7] to 1 319|684|257| 546|237| | 872|591|463| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 6 1|942| 78| |3 | 12| | 5| 4| ----------- construct_candidates k=26 next square candidates (-1,-1) slot 26 clear board[7][7] to make freecount=33 clear board[6][5] to make freecount=34 clear board[6][0] to make freecount=35 clear board[4][8] to make freecount=36 clear board[4][5] to make freecount=37 clear board[4][3] to make freecount=38 clear board[4][0] to make freecount=39 clear board[4][4] to make freecount=40 clear board[2][8] to make freecount=41 clear board[2][7] to make freecount=42 clear board[2][3] to make freecount=43 clear board[2][5] to make freecount=44 clear board[1][4] to make freecount=45 clear board[6][3] to make freecount=46 clear board[1][3] to make freecount=47 clear board[0][8] to make freecount=48 clear board[0][7] to make freecount=49 clear board[0][6] to make freecount=50 change board[0][6] to 5 319|684|5 | 546| 7| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=9 next square candidates (0,7) slot 9 change board[0][7] to 2 319|684|52 | 546| 7| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=10 next square candidates (0,8) slot 10 change board[0][8] to 7 319|684|527| 546| 7| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=11 next square candidates (1,3) slot 11 change board[1][3] to 1 319|684|527| 546|1 7| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=12 next square candidates (1,4) slot 12 change board[1][4] to 3 319|684|527| 546|137| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=13 next square candidates (-1,-1) slot 13 clear board[1][4] to make freecount=46 clear board[1][3] to make freecount=47 change board[1][3] to 2 319|684|527| 546|2 7| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=12 next square candidates (6,3) slot 12 change board[6][3] to 9 319|684|527| 546|2 7| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=13 next square candidates (1,4) slot 13 change board[1][4] to 1 319|684|527| 546|217| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=14 next square candidates (1,7) slot 14 change board[1][7] to 8 319|684|527| 546|217| 8 | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=15 next square candidates (2,3) slot 15 change board[2][3] to 5 319|684|527| 546|217| 8 | 872|59 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=16 next square candidates (2,5) slot 16 change board[2][5] to 3 319|684|527| 546|217| 8 | 872|593|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=17 next square candidates (4,4) slot 17 change board[4][4] to 3 319|684|527| 546|217| 8 | 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=18 next square candidates (1,6) slot 18 change board[1][6] to 3 319|684|527| 546|217|38 | 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (1,8) slot 19 change board[1][8] to 9 319|684|527| 546|217|389| 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (6,6) slot 20 change board[6][6] to 6 319|684|527| 546|217|389| 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 |678| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (6,0) slot 21 change board[6][0] to 2 319|684|527| 546|217|389| 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 2 1|94 |678| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (-1,-1) slot 22 clear board[6][0] to make freecount=37 clear board[6][6] to make freecount=38 clear board[1][8] to make freecount=39 clear board[1][6] to make freecount=40 change board[1][6] to 9 319|684|527| 546|217|98 | 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (1,8) slot 19 change board[1][8] to 3 319|684|527| 546|217|983| 872|593|4 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (2,7) slot 20 change board[2][7] to 1 319|684|527| 546|217|983| 872|593|41 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (2,8) slot 21 change board[2][8] to 6 319|684|527| 546|217|983| 872|593|416| ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (3,8) slot 22 change board[3][8] to 1 319|684|527| 546|217|983| 872|593|416| ----------- 8 | 5 | 1| 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (4,8) slot 23 change board[4][8] to 5 319|684|527| 546|217|983| 872|593|416| ----------- 8 | 5 | 1| 64| 3 |795| | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=24 next square candidates (-1,-1) slot 24 clear board[4][8] to make freecount=35 clear board[3][8] to make freecount=36 clear board[2][8] to make freecount=37 clear board[2][7] to make freecount=38 change board[2][7] to 6 319|684|527| 546|217|983| 872|593|46 | ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (2,8) slot 21 change board[2][8] to 1 319|684|527| 546|217|983| 872|593|461| ----------- 8 | 5 | | 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (3,8) slot 22 change board[3][8] to 6 319|684|527| 546|217|983| 872|593|461| ----------- 8 | 5 | 6| 64| 3 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (4,8) slot 23 change board[4][8] to 5 319|684|527| 546|217|983| 872|593|461| ----------- 8 | 5 | 6| 64| 3 |795| | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=24 next square candidates (-1,-1) slot 24 clear board[4][8] to make freecount=35 clear board[3][8] to make freecount=36 clear board[2][8] to make freecount=37 clear board[2][7] to make freecount=38 clear board[1][8] to make freecount=39 clear board[1][6] to make freecount=40 clear board[4][4] to make freecount=41 clear board[2][5] to make freecount=42 clear board[2][3] to make freecount=43 clear board[1][7] to make freecount=44 clear board[1][4] to make freecount=45 change board[1][4] to 3 319|684|527| 546|237| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=14 next square candidates (2,5) slot 14 change board[2][5] to 1 319|684|527| 546|237| | 872| 91|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=15 next square candidates (2,3) slot 15 change board[2][3] to 5 319|684|527| 546|237| | 872|591|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=16 next square candidates (2,7) slot 16 change board[2][7] to 6 319|684|527| 546|237| | 872|591|46 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=17 next square candidates (2,8) slot 17 change board[2][8] to 3 319|684|527| 546|237| | 872|591|463| ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=18 next square candidates (4,4) slot 18 change board[4][4] to 1 319|684|527| 546|237| | 872|591|463| ----------- 8 | 5 | | 64| 1 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (4,0) slot 19 change board[4][0] to 2 319|684|527| 546|237| | 872|591|463| ----------- 8 | 5 | | 264| 1 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (4,3) slot 20 change board[4][3] to 8 319|684|527| 546|237| | 872|591|463| ----------- 8 | 5 | | 264|81 |79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=21 next square candidates (4,5) slot 21 change board[4][5] to 3 319|684|527| 546|237| | 872|591|463| ----------- 8 | 5 | | 264|813|79 | | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=22 next square candidates (4,8) slot 22 change board[4][8] to 5 319|684|527| 546|237| | 872|591|463| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=23 next square candidates (6,0) slot 23 change board[6][0] to 6 319|684|527| 546|237| | 872|591|463| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 6 1|94 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=24 next square candidates (6,5) slot 24 change board[6][5] to 2 319|684|527| 546|237| | 872|591|463| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 6 1|942| 78| |3 | 2| | 5| 4| ----------- construct_candidates k=25 next square candidates (6,6) slot 25 change board[6][6] to 3 319|684|527| 546|237| | 872|591|463| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 6 1|942|378| |3 | 2| | 5| 4| ----------- construct_candidates k=26 next square candidates (6,1) slot 26 change board[6][1] to 5 319|684|527| 546|237| | 872|591|463| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 651|942|378| |3 | 2| | 5| 4| ----------- construct_candidates k=27 next square candidates (5,1) slot 27 change board[5][1] to 9 319|684|527| 546|237| | 872|591|463| ----------- 8 | 5 | | 264|813|795| 9 | 2 | 3 | ----------- 651|942|378| |3 | 2| | 5| 4| ----------- construct_candidates k=28 next square candidates (-1,-1) slot 28 clear board[5][1] to make freecount=31 clear board[6][1] to make freecount=32 clear board[6][6] to make freecount=33 clear board[6][5] to make freecount=34 clear board[6][0] to make freecount=35 clear board[4][8] to make freecount=36 clear board[4][5] to make freecount=37 clear board[4][3] to make freecount=38 clear board[4][0] to make freecount=39 clear board[4][4] to make freecount=40 clear board[2][8] to make freecount=41 clear board[2][7] to make freecount=42 clear board[2][3] to make freecount=43 clear board[2][5] to make freecount=44 clear board[1][4] to make freecount=45 clear board[6][3] to make freecount=46 clear board[1][3] to make freecount=47 clear board[0][8] to make freecount=48 clear board[0][7] to make freecount=49 clear board[0][6] to make freecount=50 clear board[0][5] to make freecount=51 clear board[1][1] to make freecount=52 clear board[0][1] to make freecount=53 change board[0][1] to 4 349|68 | | 5 6| 7| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=6 next square candidates (1,1) slot 6 change board[1][1] to 1 349|68 | | 516| 7| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=7 next square candidates (1,4) slot 7 change board[1][4] to 3 349|68 | | 516| 37| | 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=8 next square candidates (1,8) slot 8 change board[1][8] to 9 349|68 | | 516| 37| 9| 872| 9 |4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=9 next square candidates (2,5) slot 9 change board[2][5] to 1 349|68 | | 516| 37| 9| 872| 91|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=10 next square candidates (0,5) slot 10 change board[0][5] to 2 349|682| | 516| 37| 9| 872| 91|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=11 next square candidates (1,3) slot 11 change board[1][3] to 4 349|682| | 516|437| 9| 872| 91|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=12 next square candidates (2,3) slot 12 change board[2][3] to 5 349|682| | 516|437| 9| 872|591|4 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=13 next square candidates (2,7) slot 13 change board[2][7] to 6 349|682| | 516|437| 9| 872|591|46 | ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=14 next square candidates (2,8) slot 14 change board[2][8] to 3 349|682| | 516|437| 9| 872|591|463| ----------- 8 | 5 | | 64| |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=15 next square candidates (4,4) slot 15 change board[4][4] to 1 349|682| | 516|437| 9| 872|591|463| ----------- 8 | 5 | | 64| 1 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=16 next square candidates (4,0) slot 16 change board[4][0] to 2 349|682| | 516|437| 9| 872|591|463| ----------- 8 | 5 | | 264| 1 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=17 next square candidates (4,3) slot 17 change board[4][3] to 8 349|682| | 516|437| 9| 872|591|463| ----------- 8 | 5 | | 264|81 |79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=18 next square candidates (4,5) slot 18 change board[4][5] to 3 349|682| | 516|437| 9| 872|591|463| ----------- 8 | 5 | | 264|813|79 | | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=19 next square candidates (4,8) slot 19 change board[4][8] to 5 349|682| | 516|437| 9| 872|591|463| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 4| ----------- construct_candidates k=20 next square candidates (8,7) slot 20 change board[8][7] to 1 349|682| | 516|437| 9| 872|591|463| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 14| ----------- construct_candidates k=21 next square candidates (0,7) slot 21 change board[0][7] to 5 349|682| 5 | 516|437| 9| 872|591|463| ----------- 8 | 5 | | 264|813|795| | 2 | 3 | ----------- 1| 4 | 78| |3 | 2| | 5| 14| ----------- construct_candidates k=22 next square candidates (-1,-1) slot 22 clear board[0][7] to make freecount=37 clear board[8][7] to make freecount=38 clear board[4][8] to make freecount=39 clear board[4][5] to make freecount=40 clear board[4][3] to make freecount=41 clear board[4][0] to make freecount=42 clear board[4][4] to make freecount=43 clear board[2][8] to make freecount=44 clear board[2][7] to make freecount=45 clear board[2][3] to make freecount=46 clear board[1][3] to make freecount=47 clear board[0][5] to make freecount=48 clear board[2][5] to make freecount=49 clear board[1][8] to make freecount=50 clear board[1][4] to make freecount=51 clear board[1][1] to make freecount=52 clear board[0][1] to make freecount=53 clear board[2][2] to make freecount=54 clear board[1][2] to make freecount=55 clear board[0][4] to make freecount=56 clear board[0][2] to make freecount=57