PlaySudoku.us
Medium · Puzzle #180
8
9
4
5
3
7
5
5
3
4
2
7
9
6
6
4
1
7
7
6
9
1
1
2
3
3
6
6
9
4
3
8
6
1
5
7
"Knowing where you're going is not the same as knowing how to get there." — Epictetus
"Knowing where you're going is not the same as knowing how to get there." — Epictetus
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.