PlaySudoku.us
Easy · Puzzle #493
7
4
2
8
9
9
7
2
8
2
9
1
3
7
4
9
8
1
6
5
3
8
7
8
3
2
5
4
9
2
8
1
9
3
4
3
8
4
6
5
9
5
4
7
1
6
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.