PlaySudoku.us
Hard · Puzzle #59
3
7
8
4
1
4
1
2
6
5
2
6
4
7
9
4
3
5
3
7
8
2
4
2
1
3
8
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.