PlaySudoku.us
Easy · Puzzle #955
5
1
7
9
2
8
6
4
4
6
9
5
8
6
3
5
4
1
2
8
3
6
7
5
6
1
8
4
2
5
2
4
9
8
4
8
1
7
7
3
1
9
6
6
3
2
7
9
8
Donald Knuth's "dancing links" algorithm — published in 2000 — is one of the fastest ways to solve Sudoku by computer.
Donald Knuth's "dancing links" algorithm — published in 2000 — is one of the fastest ways to solve Sudoku by computer.
Some hospitals use Sudoku as a cognitive exercise for patients recovering from strokes or brain injuries.
Some hospitals use Sudoku as a cognitive exercise for patients recovering from strokes or brain injuries.