PlaySudoku.us
Easy · Puzzle #439
5
3
8
2
1
9
6
9
4
6
7
2
3
2
9
7
8
7
8
5
6
4
2
9
3
1
2
5
4
3
6
7
4
6
9
8
4
9
3
5
9
1
6
7
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.