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Evil · Puzzle #456
7
3
9
2
9
8
7
3
4
6
9
8
5
1
5
7
9
3
7
4
8
2
8
5
3
9
Techniques used
- Hidden Single
- Naked Quad
- Pointing Pair
- Pointing Triple
- Box-Line Reduction
- W-Wing
- 2-String Kite
- Forcing Chains
- Naked Single
- Naked Pair
- Swordfish
- XY-Chain