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Evil · Puzzle #818
8
7
7
9
2
6
8
9
1
5
3
4
5
2
3
1
3
4
7
1
6
9
2
4
7
Techniques used
- Naked Single
- Hidden Single
- Naked Triple
- Pointing Triple
- Box-Line Reduction
- Hidden Triple
- XY-Wing
- W-Wing
- Pointing Pair
- 2-String Kite
- XY-Chain
- Naked Quad