PlaySudoku.us
Medium · Puzzle #725
9
7
5
4
3
1
2
1
2
5
8
3
9
5
4
6
4
6
5
2
9
8
9
9
2
6
9
3
9
4
2
Backtracking — the algorithm most computers use to solve Sudoku — is a form of depth-first search with pruning.
Backtracking — the algorithm most computers use to solve Sudoku — is a form of depth-first search with pruning.
Backtracking — the algorithm most computers use to solve Sudoku — is a form of depth-first search with pruning.
Backtracking — the algorithm most computers use to solve Sudoku — is a form of depth-first search with pruning.