4 ms·
A bit of Googling also reveals that some Sudoku puzzles are invertible, so it sounds like in addition to this problem, you'd better pick your sudoku solution ca
by breckinloggins 14y ago
A bit of Googling also reveals that some Sudoku puzzles are invertible, so it sounds like in addition to this problem, you'd better pick your sudoku solution carefully, as it might be possible to recover the key if the number of candidate images is small.