PlaySudoku.us
Evil · Puzzle #360
1
4
8
6
7
4
7
6
4
9
2
9
2
5
8
4
9
6
9
2
3
7
1
Techniques used
- Hidden Single
- Naked Single
- Naked Triple
- Naked Quad
- Pointing Pair
- Pointing Triple
- Box-Line Reduction
- Swordfish
- XY-Chain
- Forcing Chains
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.
"The universe is under no obligation to make sense to you." — Neil deGrasse Tyson
"The universe is under no obligation to make sense to you." — Neil deGrasse Tyson