PlaySudoku.us
Easy · Puzzle #381
4
2
7
3
1
1
2
3
7
6
5
8
5
4
7
3
6
9
1
4
2
4
6
5
7
2
3
1
5
9
3
8
6
7
8
3
5
6
4
7
2
7
8
4
6
9
1
3
8
2
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.
If you solved one unique Sudoku puzzle per second, it would take you over 200 trillion years to solve every possible grid.
If you solved one unique Sudoku puzzle per second, it would take you over 200 trillion years to solve every possible grid.