PlaySudoku.us
Easy · Puzzle #691
5
4
1
3
6
8
6
7
1
5
2
4
2
6
4
7
1
8
4
1
3
2
2
3
7
4
6
4
3
6
4
8
3
5
7
8
5
6
4
1
3
4
7
5
2
8
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.