8
3
9
5
4
5
8
7
3
9
5
6
2
4
8
2
2
3
5
6
1
5
4
9
5
6
3
7
2
8
3
7
"Mathematics is the only place where truth and beauty mean the same thing." — Danica McKellar
"Mathematics is the only place where truth and beauty mean the same thing." — Danica McKellar
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.