PlaySudoku.us
Medium · Puzzle #78
7
3
1
1
7
3
5
4
5
4
6
7
6
1
8
5
4
3
4
5
8
3
8
5
6
5
9
4
3
1
8
7
1
2
3
In combinatorics, the pattern formed by Sudoku clue cells is studied as a problem in 'hitting sets' and transversals.
In combinatorics, the pattern formed by Sudoku clue cells is studied as a problem in 'hitting sets' and transversals.
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.