PlaySudoku.us
Evil · Puzzle #462
7
2
5
2
6
1
8
5
4
3
9
8
7
9
4
1
9
6
8
6
7
5
2
1
Techniques used
- Hidden Single
- Naked Pair
- Naked Triple
- Naked Quad
- Naked Single
- Pointing Pair
- XY-Wing
- W-Wing
"I hated every minute of training, but I said: don't quit. Suffer now and live the rest of your life as a champion." — Muhammad Ali
"I hated every minute of training, but I said: don't quit. Suffer now and live the rest of your life as a champion." — Muhammad Ali
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.