PlaySudoku.us
Easy · Puzzle #637
6
3
4
7
5
2
8
4
7
2
6
1
8
1
9
3
2
4
3
2
4
7
6
4
3
5
7
9
1
6
2
6
8
3
9
5
5
9
1
3
4
2
8
7
8
7
9
5
1
4
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.