PlaySudoku.us
Medium · Puzzle #680
6
3
7
9
4
4
1
8
8
9
1
3
2
4
6
6
9
4
1
4
7
3
3
7
8
1
4
1
8
5
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.