PlaySudoku.us
Evil · Puzzle #19
7
4
8
2
5
9
1
3
2
8
6
7
6
3
6
7
4
9
5
1
5
8
2
7
Techniques used
- Naked Single
- Hidden Single
- Naked Pair
- Naked Triple
- Naked Quad
- Box-Line Reduction
- Pointing Pair
- XY-Chain
- UR Type 1
- Forcing Chains
"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.