PlaySudoku.us
Medium · Puzzle #228
9
4
8
1
5
8
3
3
8
5
6
4
6
9
8
2
4
5
9
6
9
4
3
8
2
5
6
1
6
7
9
8
6
7
8
2
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.