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safe = 1, row = 0, col = 0
safe = 0, row = 1, col = 0
safe = 0, row = 1, col = 1
safe = 1, row = 1, col = 2
safe = 0, row = 2, col = 0
safe = 0, row = 2, col = 1
safe = 0, row = 2, col = 2
safe = 0, row = 2, col = 3
safe = 1, row = 2, col = 4
safe = 0, row = 3, col = 0
safe = 1, row = 3, col = 1
safe = 0, row = 4, col = 0
safe = 0, row = 4, col = 1
safe = 0, row = 4, col = 2
safe = 1, row = 4, col = 3
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 3
row is 4 col is 4
safe = 0, row = 4, col = 4
safe = 0, row = 4, col = 5
safe = 0, row = 4, col = 6
safe = 1, row = 4, col = 7
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 7
row is 4 col is 8
previous col where we had one is = 1
row is 3 col is 2
safe = 0, row = 3, col = 2
safe = 0, row = 3, col = 3
safe = 0, row = 3, col = 4
safe = 0, row = 3, col = 5
safe = 1, row = 3, col = 6
safe = 0, row = 4, col = 0
safe = 1, row = 4, col = 1
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 1, row = 5, col = 3
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 0, row = 6, col = 3
safe = 0, row = 6, col = 4
safe = 1, row = 6, col = 5
safe = 0, row = 7, col = 0
safe = 0, row = 7, col = 1
safe = 0, row = 7, col = 2
safe = 0, row = 7, col = 3
safe = 0, row = 7, col = 4
safe = 0, row = 7, col = 5
safe = 0, row = 7, col = 6
safe = 0, row = 7, col = 7
previous col where we had one is = 5
row is 6 col is 6
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 3
row is 5 col is 4
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 1
row is 4 col is 2
safe = 0, row = 4, col = 2
safe = 1, row = 4, col = 3
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 3
row is 4 col is 4
safe = 0, row = 4, col = 4
safe = 0, row = 4, col = 5
safe = 0, row = 4, col = 6
safe = 0, row = 4, col = 7
previous col where we had one is = 6
row is 3 col is 7
safe = 1, row = 3, col = 7
safe = 0, row = 4, col = 0
safe = 1, row = 4, col = 1
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 1, row = 5, col = 3
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 0, row = 6, col = 3
safe = 0, row = 6, col = 4
safe = 1, row = 6, col = 5
safe = 0, row = 7, col = 0
safe = 0, row = 7, col = 1
safe = 0, row = 7, col = 2
safe = 0, row = 7, col = 3
safe = 0, row = 7, col = 4
safe = 0, row = 7, col = 5
safe = 0, row = 7, col = 6
safe = 0, row = 7, col = 7
previous col where we had one is = 5
row is 6 col is 6
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 3
row is 5 col is 4
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 1
row is 4 col is 2
safe = 0, row = 4, col = 2
safe = 1, row = 4, col = 3
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 3
row is 4 col is 4
safe = 0, row = 4, col = 4
safe = 0, row = 4, col = 5
safe = 0, row = 4, col = 6
safe = 0, row = 4, col = 7
previous col where we had one is = 7
row is 3 col is 8
previous col where we had one is = 4
row is 2 col is 5
safe = 1, row = 2, col = 5
safe = 0, row = 3, col = 0
safe = 1, row = 3, col = 1
safe = 0, row = 4, col = 0
safe = 0, row = 4, col = 1
safe = 0, row = 4, col = 2
safe = 0, row = 4, col = 3
safe = 0, row = 4, col = 4
safe = 0, row = 4, col = 5
safe = 1, row = 4, col = 6
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 1, row = 5, col = 4
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 0, row = 6, col = 3
safe = 0, row = 6, col = 4
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 4
row is 5 col is 5
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 6
row is 4 col is 7
safe = 0, row = 4, col = 7
previous col where we had one is = 1
row is 3 col is 2
safe = 0, row = 3, col = 2
safe = 0, row = 3, col = 3
safe = 0, row = 3, col = 4
safe = 0, row = 3, col = 5
safe = 0, row = 3, col = 6
safe = 1, row = 3, col = 7
safe = 0, row = 4, col = 0
safe = 1, row = 4, col = 1
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 1, row = 5, col = 3
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 0, row = 6, col = 3
safe = 0, row = 6, col = 4
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 3
row is 5 col is 4
safe = 1, row = 5, col = 4
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 0, row = 6, col = 3
safe = 0, row = 6, col = 4
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 4
row is 5 col is 5
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 1
row is 4 col is 2
safe = 0, row = 4, col = 2
safe = 0, row = 4, col = 3
safe = 0, row = 4, col = 4
safe = 0, row = 4, col = 5
safe = 0, row = 4, col = 6
safe = 0, row = 4, col = 7
previous col where we had one is = 7
row is 3 col is 8
previous col where we had one is = 5
row is 2 col is 6
safe = 1, row = 2, col = 6
safe = 0, row = 3, col = 0
safe = 1, row = 3, col = 1
safe = 0, row = 4, col = 0
safe = 0, row = 4, col = 1
safe = 0, row = 4, col = 2
safe = 1, row = 4, col = 3
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 1, row = 5, col = 7
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 0, row = 6, col = 3
safe = 0, row = 6, col = 4
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 7
row is 5 col is 8
previous col where we had one is = 3
row is 4 col is 4
safe = 0, row = 4, col = 4
safe = 0, row = 4, col = 5
safe = 0, row = 4, col = 6
safe = 1, row = 4, col = 7
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 1, row = 5, col = 4
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 0, row = 6, col = 3
safe = 0, row = 6, col = 4
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 4
row is 5 col is 5
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 7
row is 4 col is 8
previous col where we had one is = 1
row is 3 col is 2
safe = 0, row = 3, col = 2
safe = 0, row = 3, col = 3
safe = 0, row = 3, col = 4
safe = 0, row = 3, col = 5
safe = 0, row = 3, col = 6
safe = 0, row = 3, col = 7
previous col where we had one is = 6
row is 2 col is 7
safe = 1, row = 2, col = 7
safe = 0, row = 3, col = 0
safe = 1, row = 3, col = 1
safe = 0, row = 4, col = 0
safe = 0, row = 4, col = 1
safe = 0, row = 4, col = 2
safe = 1, row = 4, col = 3
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 3
row is 4 col is 4
safe = 0, row = 4, col = 4
safe = 0, row = 4, col = 5
safe = 1, row = 4, col = 6
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 6
row is 4 col is 7
safe = 0, row = 4, col = 7
previous col where we had one is = 1
row is 3 col is 2
safe = 0, row = 3, col = 2
safe = 0, row = 3, col = 3
safe = 0, row = 3, col = 4
safe = 1, row = 3, col = 5
safe = 0, row = 4, col = 0
safe = 1, row = 4, col = 1
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 1
row is 4 col is 2
safe = 0, row = 4, col = 2
safe = 1, row = 4, col = 3
safe = 0, row = 5, col = 0
safe = 1, row = 5, col = 1
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 0, row = 6, col = 3
safe = 1, row = 6, col = 4
safe = 0, row = 7, col = 0
safe = 0, row = 7, col = 1
safe = 0, row = 7, col = 2
safe = 0, row = 7, col = 3
safe = 0, row = 7, col = 4
safe = 0, row = 7, col = 5
safe = 0, row = 7, col = 6
safe = 0, row = 7, col = 7
previous col where we had one is = 4
row is 6 col is 5
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 1
row is 5 col is 2
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 3
row is 4 col is 4
safe = 0, row = 4, col = 4
safe = 0, row = 4, col = 5
safe = 0, row = 4, col = 6
safe = 0, row = 4, col = 7
previous col where we had one is = 5
row is 3 col is 6
safe = 0, row = 3, col = 6
safe = 0, row = 3, col = 7
previous col where we had one is = 7
row is 2 col is 8
previous col where we had one is = 2
row is 1 col is 3
safe = 1, row = 1, col = 3
safe = 0, row = 2, col = 0
safe = 1, row = 2, col = 1
safe = 0, row = 3, col = 0
safe = 0, row = 3, col = 1
safe = 0, row = 3, col = 2
safe = 0, row = 3, col = 3
safe = 1, row = 3, col = 4
safe = 0, row = 4, col = 0
safe = 0, row = 4, col = 1
safe = 1, row = 4, col = 2
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 2
row is 4 col is 3
safe = 0, row = 4, col = 3
safe = 0, row = 4, col = 4
safe = 0, row = 4, col = 5
safe = 0, row = 4, col = 6
safe = 1, row = 4, col = 7
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 7
row is 4 col is 8
previous col where we had one is = 4
row is 3 col is 5
safe = 0, row = 3, col = 5
safe = 1, row = 3, col = 6
safe = 0, row = 4, col = 0
safe = 0, row = 4, col = 1
safe = 1, row = 4, col = 2
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 2
row is 4 col is 3
safe = 0, row = 4, col = 3
safe = 0, row = 4, col = 4
safe = 0, row = 4, col = 5
safe = 0, row = 4, col = 6
safe = 0, row = 4, col = 7
previous col where we had one is = 6
row is 3 col is 7
safe = 1, row = 3, col = 7
safe = 0, row = 4, col = 0
safe = 0, row = 4, col = 1
safe = 1, row = 4, col = 2
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 1, row = 5, col = 6
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 0, row = 6, col = 3
safe = 0, row = 6, col = 4
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 6
row is 5 col is 7
safe = 0, row = 5, col = 7
previous col where we had one is = 2
row is 4 col is 3
safe = 0, row = 4, col = 3
safe = 0, row = 4, col = 4
safe = 1, row = 4, col = 5
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 1, row = 5, col = 2
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 0, row = 6, col = 3
safe = 0, row = 6, col = 4
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 2
row is 5 col is 3
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 5
row is 4 col is 6
safe = 0, row = 4, col = 6
safe = 0, row = 4, col = 7
previous col where we had one is = 7
row is 3 col is 8
previous col where we had one is = 1
row is 2 col is 2
safe = 0, row = 2, col = 2
safe = 0, row = 2, col = 3
safe = 0, row = 2, col = 4
safe = 1, row = 2, col = 5
safe = 0, row = 3, col = 0
safe = 0, row = 3, col = 1
safe = 1, row = 3, col = 2
safe = 0, row = 4, col = 0
safe = 0, row = 4, col = 1
safe = 0, row = 4, col = 2
safe = 0, row = 4, col = 3
safe = 0, row = 4, col = 4
safe = 0, row = 4, col = 5
safe = 0, row = 4, col = 6
safe = 0, row = 4, col = 7
previous col where we had one is = 2
row is 3 col is 3
safe = 0, row = 3, col = 3
safe = 0, row = 3, col = 4
safe = 0, row = 3, col = 5
safe = 0, row = 3, col = 6
safe = 1, row = 3, col = 7
safe = 0, row = 4, col = 0
safe = 1, row = 4, col = 1
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 1, row = 5, col = 4
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 1, row = 6, col = 2
safe = 0, row = 7, col = 0
safe = 0, row = 7, col = 1
safe = 0, row = 7, col = 2
safe = 0, row = 7, col = 3
safe = 0, row = 7, col = 4
safe = 0, row = 7, col = 5
safe = 0, row = 7, col = 6
safe = 0, row = 7, col = 7
previous col where we had one is = 2
row is 6 col is 3
safe = 0, row = 6, col = 3
safe = 0, row = 6, col = 4
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 4
row is 5 col is 5
safe = 0, row = 5, col = 5
safe = 1, row = 5, col = 6
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 1, row = 6, col = 2
safe = 0, row = 7, col = 0
safe = 0, row = 7, col = 1
safe = 0, row = 7, col = 2
safe = 0, row = 7, col = 3
safe = 0, row = 7, col = 4
safe = 0, row = 7, col = 5
safe = 0, row = 7, col = 6
safe = 0, row = 7, col = 7
previous col where we had one is = 2
row is 6 col is 3
safe = 0, row = 6, col = 3
safe = 0, row = 6, col = 4
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 6
row is 5 col is 7
safe = 0, row = 5, col = 7
previous col where we had one is = 1
row is 4 col is 2
safe = 1, row = 4, col = 2
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 1, row = 5, col = 4
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 0, row = 6, col = 3
safe = 0, row = 6, col = 4
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 4
row is 5 col is 5
safe = 0, row = 5, col = 5
safe = 1, row = 5, col = 6
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 0, row = 6, col = 3
safe = 0, row = 6, col = 4
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 6
row is 5 col is 7
safe = 0, row = 5, col = 7
previous col where we had one is = 2
row is 4 col is 3
safe = 0, row = 4, col = 3
safe = 0, row = 4, col = 4
safe = 0, row = 4, col = 5
safe = 0, row = 4, col = 6
safe = 0, row = 4, col = 7
previous col where we had one is = 7
row is 3 col is 8
previous col where we had one is = 5
row is 2 col is 6
safe = 1, row = 2, col = 6
safe = 0, row = 3, col = 0
safe = 0, row = 3, col = 1
safe = 1, row = 3, col = 2
safe = 0, row = 4, col = 0
safe = 0, row = 4, col = 1
safe = 0, row = 4, col = 2
safe = 0, row = 4, col = 3
safe = 0, row = 4, col = 4
safe = 1, row = 4, col = 5
safe = 0, row = 5, col = 0
safe = 1, row = 5, col = 1
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 0, row = 6, col = 3
safe = 1, row = 6, col = 4
safe = 0, row = 7, col = 0
safe = 0, row = 7, col = 1
safe = 0, row = 7, col = 2
safe = 0, row = 7, col = 3
safe = 0, row = 7, col = 4
safe = 0, row = 7, col = 5
safe = 0, row = 7, col = 6
safe = 0, row = 7, col = 7
previous col where we had one is = 4
row is 6 col is 5
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 1
row is 5 col is 2
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 5
row is 4 col is 6
safe = 0, row = 4, col = 6
safe = 1, row = 4, col = 7
safe = 0, row = 5, col = 0
safe = 1, row = 5, col = 1
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 0, row = 6, col = 3
safe = 1, row = 6, col = 4
safe = 0, row = 7, col = 0
safe = 0, row = 7, col = 1
safe = 0, row = 7, col = 2
safe = 0, row = 7, col = 3
safe = 0, row = 7, col = 4
safe = 0, row = 7, col = 5
safe = 0, row = 7, col = 6
safe = 0, row = 7, col = 7
previous col where we had one is = 4
row is 6 col is 5
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 1
row is 5 col is 2
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 7
row is 4 col is 8
previous col where we had one is = 2
row is 3 col is 3
safe = 0, row = 3, col = 3
safe = 1, row = 3, col = 4
safe = 0, row = 4, col = 0
safe = 1, row = 4, col = 1
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 1
row is 4 col is 2
safe = 1, row = 4, col = 2
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 2
row is 4 col is 3
safe = 0, row = 4, col = 3
safe = 0, row = 4, col = 4
safe = 0, row = 4, col = 5
safe = 0, row = 4, col = 6
safe = 1, row = 4, col = 7
safe = 0, row = 5, col = 0
safe = 1, row = 5, col = 1
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 0, row = 6, col = 3
safe = 0, row = 6, col = 4
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 1
row is 5 col is 2
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 7
row is 4 col is 8
previous col where we had one is = 4
row is 3 col is 5
safe = 0, row = 3, col = 5
safe = 0, row = 3, col = 6
safe = 0, row = 3, col = 7
previous col where we had one is = 6
row is 2 col is 7
safe = 1, row = 2, col = 7
safe = 0, row = 3, col = 0
safe = 0, row = 3, col = 1
safe = 1, row = 3, col = 2
safe = 0, row = 4, col = 0
safe = 0, row = 4, col = 1
safe = 0, row = 4, col = 2
safe = 0, row = 4, col = 3
safe = 0, row = 4, col = 4
safe = 0, row = 4, col = 5
safe = 0, row = 4, col = 6
safe = 0, row = 4, col = 7
previous col where we had one is = 2
row is 3 col is 3
safe = 0, row = 3, col = 3
safe = 1, row = 3, col = 4
safe = 0, row = 4, col = 0
safe = 1, row = 4, col = 1
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 1
row is 4 col is 2
safe = 1, row = 4, col = 2
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 2
row is 4 col is 3
safe = 0, row = 4, col = 3
safe = 0, row = 4, col = 4
safe = 0, row = 4, col = 5
safe = 0, row = 4, col = 6
safe = 0, row = 4, col = 7
previous col where we had one is = 4
row is 3 col is 5
safe = 0, row = 3, col = 5
safe = 0, row = 3, col = 6
safe = 0, row = 3, col = 7
previous col where we had one is = 7
row is 2 col is 8
previous col where we had one is = 3
row is 1 col is 4
safe = 1, row = 1, col = 4
safe = 0, row = 2, col = 0
safe = 1, row = 2, col = 1
safe = 0, row = 3, col = 0
safe = 0, row = 3, col = 1
safe = 0, row = 3, col = 2
safe = 0, row = 3, col = 3
safe = 0, row = 3, col = 4
safe = 1, row = 3, col = 5
safe = 0, row = 4, col = 0
safe = 0, row = 4, col = 1
safe = 1, row = 4, col = 2
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 1, row = 5, col = 6
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 1, row = 6, col = 3
safe = 0, row = 7, col = 0
safe = 0, row = 7, col = 1
safe = 0, row = 7, col = 2
safe = 0, row = 7, col = 3
safe = 0, row = 7, col = 4
safe = 0, row = 7, col = 5
safe = 0, row = 7, col = 6
safe = 0, row = 7, col = 7
previous col where we had one is = 3
row is 6 col is 4
safe = 0, row = 6, col = 4
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 6
row is 5 col is 7
safe = 0, row = 5, col = 7
previous col where we had one is = 2
row is 4 col is 3
safe = 0, row = 4, col = 3
safe = 0, row = 4, col = 4
safe = 0, row = 4, col = 5
safe = 0, row = 4, col = 6
safe = 0, row = 4, col = 7
previous col where we had one is = 5
row is 3 col is 6
safe = 0, row = 3, col = 6
safe = 1, row = 3, col = 7
safe = 0, row = 4, col = 0
safe = 0, row = 4, col = 1
safe = 1, row = 4, col = 2
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 1, row = 5, col = 6
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 1, row = 6, col = 3
safe = 0, row = 7, col = 0
safe = 0, row = 7, col = 1
safe = 0, row = 7, col = 2
safe = 0, row = 7, col = 3
safe = 0, row = 7, col = 4
safe = 0, row = 7, col = 5
safe = 0, row = 7, col = 6
safe = 0, row = 7, col = 7
previous col where we had one is = 3
row is 6 col is 4
safe = 0, row = 6, col = 4
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 6
row is 5 col is 7
safe = 0, row = 5, col = 7
previous col where we had one is = 2
row is 4 col is 3
safe = 0, row = 4, col = 3
safe = 0, row = 4, col = 4
safe = 1, row = 4, col = 5
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 1, row = 5, col = 2
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 0, row = 6, col = 3
safe = 0, row = 6, col = 4
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 2
row is 5 col is 3
safe = 1, row = 5, col = 3
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 0, row = 6, col = 3
safe = 0, row = 6, col = 4
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 3
row is 5 col is 4
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 0, row = 5, col = 7
previous col where we had one is = 5
row is 4 col is 6
safe = 0, row = 4, col = 6
safe = 0, row = 4, col = 7
previous col where we had one is = 7
row is 3 col is 8
previous col where we had one is = 1
row is 2 col is 2
safe = 0, row = 2, col = 2
safe = 0, row = 2, col = 3
safe = 0, row = 2, col = 4
safe = 0, row = 2, col = 5
safe = 1, row = 2, col = 6
safe = 0, row = 3, col = 0
safe = 1, row = 3, col = 1
safe = 0, row = 4, col = 0
safe = 0, row = 4, col = 1
safe = 0, row = 4, col = 2
safe = 1, row = 4, col = 3
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 0, row = 5, col = 2
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 1, row = 5, col = 7
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 0, row = 6, col = 3
safe = 0, row = 6, col = 4
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 7
row is 5 col is 8
previous col where we had one is = 3
row is 4 col is 4
safe = 0, row = 4, col = 4
safe = 1, row = 4, col = 5
safe = 0, row = 5, col = 0
safe = 0, row = 5, col = 1
safe = 1, row = 5, col = 2
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 0, row = 6, col = 3
safe = 0, row = 6, col = 4
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 2
row is 5 col is 3
safe = 0, row = 5, col = 3
safe = 0, row = 5, col = 4
safe = 0, row = 5, col = 5
safe = 0, row = 5, col = 6
safe = 1, row = 5, col = 7
safe = 0, row = 6, col = 0
safe = 0, row = 6, col = 1
safe = 0, row = 6, col = 2
safe = 0, row = 6, col = 3
safe = 0, row = 6, col = 4
safe = 0, row = 6, col = 5
safe = 0, row = 6, col = 6
safe = 0, row = 6, col = 7
previous col where we had one is = 7
row is 5 col is 8
previous col where we had one is = 5
row is 4 col is 6
safe = 0, row = 4, col = 6
safe = 0, row = 4, col = 7
previous col where we had one is = 1
row is 3 col is 2
safe = 0, row = 3, col = 2
safe = 0, row = 3, col = 3
safe = 0, row = 3, col = 4
safe = 0, row = 3, col = 5
safe = 0, row = 3, col = 6
safe = 0, row = 3, col = 7
previous col where we had one is = 6
row is 2 col is 7
safe = 1, row = 2, col = 7
safe = 0, row = 3, col = 0
safe = 1, row = 3, col = 1
safe = 0, row = 4, col = 0
safe = 0, row = 4, col = 1
safe = 0, row = 4, col = 2
safe = 1, row = 4, col = 3