PlaySudoku.us
Evil · Puzzle #808
1
9
8
7
1
6
9
4
1
7
2
4
9
5
3
9
3
9
2
6
5
2
5
4
7
Techniques used
- Naked Single
- Hidden Single
- 2-String Kite
- Finned X-Wing
- Forcing Chains
- Pointing Pair
- Naked Pair
- Skyscraper
- Box-Line Reduction
- UR Type 1
- Naked Quad
- XY-Chain