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Evil · Puzzle #233
1
2
9
4
6
3
5
3
9
7
1
2
6
5
7
6
8
7
5
1
4
6
8
Techniques used
- Hidden Single
- Naked Pair
- Naked Triple
- Pointing Pair
- Pointing Triple
- Box-Line Reduction
- Skyscraper
- 2-String Kite
- X-Wing
- Forcing Chains
- Naked Single
- Naked Quad
- W-Wing