PlaySudoku.us
Expert · Puzzle #512
2
4
5
1
9
5
3
7
5
3
4
5
8
6
1
6
9
2
2
8
4
8
5
7
7
3
Counting the number of Sudoku solutions for a given puzzle is #P-complete — computationally harder than NP-complete.
Counting the number of Sudoku solutions for a given puzzle is #P-complete — computationally harder than NP-complete.
Japan has a national Sudoku puzzle competition with separate categories for speed and accuracy.
Japan has a national Sudoku puzzle competition with separate categories for speed and accuracy.