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Evil · Puzzle #704
2
5
9
9
7
1
8
2
7
3
4
6
1
4
8
6
2
6
9
7
2
4
7
3
8
Techniques used
- Naked Single
- Hidden Single
- Pointing Pair
- X-Wing
- Forcing Chains
- Naked Pair
- XY-Chain
- Naked Quad
- Box-Line Reduction
- Finned X-Wing
- Naked Triple
- Skyscraper