PlaySudoku.us
Evil · Puzzle #617
9
3
7
7
9
6
6
8
6
4
9
4
8
1
8
2
1
8
5
1
9
6
4
9
5
7
Techniques used
- Hidden Single
- Pointing Pair
- Finned X-Wing
- Forcing Chains
- Naked Single
- Naked Pair
- Skyscraper
- Pointing Triple
- Box-Line Reduction
- 2-String Kite
- W-Wing