PlaySudoku.us
Evil · Puzzle #70
2
2
4
6
7
1
7
3
9
8
7
4
2
3
5
9
1
4
8
5
1
8
9
6
"God made the integers; all else is the work of man." — Leopold Kronecker
"God made the integers; all else is the work of man." — Leopold Kronecker
Network flow algorithms can solve special classes of Sudoku more efficiently than general backtracking.
Network flow algorithms can solve special classes of Sudoku more efficiently than general backtracking.