PlaySudoku.us
Expert · Puzzle #911
4
9
2
1
3
8
6
5
2
9
1
8
4
5
5
6
7
6
7
1
4
6
3
2
1
Techniques used
- Hidden Single
- Naked Pair
- Pointing Pair
- Skyscraper
- Naked Single
- Naked Triple
- XY-Wing
- 2-String Kite
"Sports do not build character. They reveal it." — Heywood Broun
"Sports do not build character. They reveal it." — Heywood Broun
Simulated annealing — a probabilistic optimization method — can solve Sudoku but cannot guarantee a unique solution.
Simulated annealing — a probabilistic optimization method — can solve Sudoku but cannot guarantee a unique solution.