PlaySudoku.us
Expert · Puzzle #455
7
9
7
1
1
3
9
6
6
3
3
8
4
2
5
4
6
2
1
6
4
9
5
8
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.
"No amount of experimentation can ever prove me right; a single experiment can prove me wrong." — Albert Einstein
"No amount of experimentation can ever prove me right; a single experiment can prove me wrong." — Albert Einstein