PlaySudoku.us
Easy · Puzzle #178
7
1
5
4
9
4
9
3
1
1
8
7
2
5
8
3
9
2
1
5
8
9
6
4
9
7
1
3
2
8
1
6
5
5
7
6
2
1
8
4
3
8
6
1
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.