PlaySudoku.us
Evil · Puzzle #153
1
7
6
5
6
9
8
7
8
2
4
5
2
3
4
6
3
1
2
1
9
5
1
3
5
Techniques used
- Naked Single
- Hidden Single
- Naked Pair
- Pointing Pair
- W-Wing
- 2-String Kite
- Box-Line Reduction
- XY-Chain
"Stay hungry, stay foolish." — Steve Jobs
"Stay hungry, stay foolish." — Steve Jobs
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.