PlaySudoku.us
Easy · Puzzle #655
8
1
5
6
3
2
8
1
5
6
7
5
3
9
8
1
9
1
6
1
5
4
2
9
9
4
3
2
4
7
9
6
2
3
5
8
3
4
9
2
7
5
9
3
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.