PlaySudoku.us
Medium · Puzzle #147
1
9
8
3
6
5
2
9
6
8
9
7
4
9
7
4
3
4
8
3
2
9
1
6
4
7
1
7
2
9
3
6
1
2
1
7
4
Solving Sudoku is NP-complete for an n×n grid. For the standard 9×9, it's fast — but for larger grids, it becomes exponentially harder.
Solving Sudoku is NP-complete for an n×n grid. For the standard 9×9, it's fast — but for larger grids, it becomes exponentially harder.
Solving Sudoku is NP-complete for an n×n grid. For the standard 9×9, it's fast — but for larger grids, it becomes exponentially harder.
Solving Sudoku is NP-complete for an n×n grid. For the standard 9×9, it's fast — but for larger grids, it becomes exponentially harder.