PlaySudoku.us
Medium · Puzzle #350
7
3
1
4
9
3
3
6
5
7
4
3
9
1
6
4
8
6
7
1
3
2
4
8
6
3
2
3
4
1
4
5
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