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Evil · Puzzle #458
9
1
2
3
7
2
4
3
9
1
2
5
4
6
1
3
8
6
7
4
3
8
1
4
8
9
Techniques used
- Hidden Single
- Naked Pair
- Naked Triple
- Naked Quad
- Pointing Pair
- Pointing Triple
- 2-String Kite
- XY-Chain
- Skyscraper
- Naked Single
- UR Type 4
- Box-Line Reduction
- Forcing Chains