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Evil · Puzzle #144
8
6
9
4
5
3
2
6
5
3
2
3
7
1
4
6
4
2
9
5
7
1
7
4
9
8
1
Techniques used
- Naked Single
- Hidden Single
- Naked Pair
- Pointing Pair
- Skyscraper
- W-Wing
- 2-String Kite
- Finned X-Wing
- Forcing Chains
- Naked Quad
- X-Wing
- XY-Chain
- XY-Wing