PlaySudoku.us
Evil · Puzzle #453
5
7
3
2
2
7
8
5
4
4
2
7
2
9
6
3
1
2
5
5
4
1
1
9
Techniques used
- Naked Single
- Hidden Single
- Naked Pair
- Box-Line Reduction
- XY-Wing
- W-Wing
- 2-String Kite
- XY-Chain
- Pointing Pair
"Chess, like love, like music, has the power to make men happy." — Siegbert Tarrasch
"Chess, like love, like music, has the power to make men happy." — Siegbert Tarrasch
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.