PlaySudoku.us
Easy · Puzzle #457
5
6
8
2
4
9
9
4
2
8
6
5
3
1
7
1
6
8
2
4
6
8
5
4
1
5
2
3
6
8
9
8
4
1
2
7
4
9
2
9
6
3
5
8
1
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.