PlaySudoku.us
Medium · Puzzle #86
1
5
4
7
8
5
6
6
2
8
5
4
8
1
7
7
3
6
8
5
9
5
6
1
8
6
1
2
7
8
7
8
9
6
3
1
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.