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Evil · Puzzle #720
2
9
4
3
1
4
6
2
3
8
2
7
5
6
4
5
4
7
2
3
3
1
8
9
Techniques used
- Hidden Single
- Naked Quad
- Naked Pair
- Pointing Pair
- Box-Line Reduction
- Finned X-Wing
- Forcing Chains
- Skyscraper
- Naked Triple
- 2-String Kite
- Naked Single
- XY-Chain