PlaySudoku.us
Medium · Puzzle #705
4
6
5
8
2
5
3
5
4
4
2
6
9
8
3
8
6
9
1
5
9
1
8
3
5
1
9
8
3
7
2
1
8
Donald Knuth's "Algorithm X" with dancing links solves exact cover problems — of which Sudoku is a special case.
Donald Knuth's "Algorithm X" with dancing links solves exact cover problems — of which Sudoku is a special case.
"The mind is not a vessel to be filled, but a fire to be kindled." — Plutarch
"The mind is not a vessel to be filled, but a fire to be kindled." — Plutarch