PlaySudoku.us
Medium · Puzzle #639
4
3
6
1
2
9
7
9
8
2
1
7
3
7
9
2
2
7
8
3
5
2
3
4
1
7
8
8
5
4
1
1
2
4
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.
"You miss 100% of the shots you don't take." — Wayne Gretzky
"You miss 100% of the shots you don't take." — Wayne Gretzky