PlaySudoku.us
Easy · Puzzle #871
2
1
7
9
3
6
5
4
8
2
7
7
8
3
2
9
4
5
8
6
9
1
9
3
4
8
5
6
1
5
9
2
4
3
4
3
6
6
9
1
7
8
6
3
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.