PlaySudoku.us
Medium · Puzzle #446
4
2
9
1
4
6
3
4
8
7
8
7
2
5
1
6
9
8
2
5
7
1
6
7
9
3
1
3
8
6
4
5
4
7
6
1
3
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.