PlaySudoku.us
Evil · Puzzle #830
4
6
9
9
8
2
5
6
1
5
3
2
9
8
6
5
5
4
2
1
9
2
6
3
8
4
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.
"Pure mathematics is, in its way, the poetry of logical ideas." — Albert Einstein
"Pure mathematics is, in its way, the poetry of logical ideas." — Albert Einstein