PlaySudoku.us
Expert · Puzzle #902
8
1
2
9
3
4
1
7
2
7
6
1
3
8
7
6
3
4
5
2
5
8
5
4
2
"Research is to see what everybody else has seen, and to think what nobody else has thought." — Albert Szent-Györgyi
"Research is to see what everybody else has seen, and to think what nobody else has thought." — Albert Szent-Györgyi
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.