PlaySudoku.us
Easy · Puzzle #780
6
7
9
4
3
2
1
6
7
4
3
4
5
7
2
1
7
4
3
9
1
1
2
3
8
6
3
4
9
3
5
7
1
4
8
2
6
8
1
1
8
3
2
7
"A champion is afraid of losing. Everyone else is afraid of winning." — Billie Jean King
"A champion is afraid of losing. Everyone else is afraid of winning." — Billie Jean King
Solving Sudoku is NP-complete for an n×n grid. For the standard 9×9, it's fast — but larger grids become exponentially harder.
Solving Sudoku is NP-complete for an n×n grid. For the standard 9×9, it's fast — but larger grids become exponentially harder.