PlaySudoku.us
Medium · Puzzle #466
3
2
6
5
1
6
8
1
5
3
7
3
8
4
5
7
3
6
9
1
4
4
1
6
6
3
8
6
4
7
9
3
Solving Sudoku is NP-complete for an n×n grid. For the standard 9×9, it's fast — but larger grids become exponentially harder.
Solving Sudoku is NP-complete for an n×n grid. For the standard 9×9, it's fast — but larger grids become exponentially harder.
"We must know. We will know." — David Hilbert
"We must know. We will know." — David Hilbert