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Evil · Puzzle #509
2
5
6
9
1
4
8
3
8
4
1
3
7
9
7
5
8
2
8
6
9
5
7
1
6
Techniques used
- Naked Single
- Hidden Single
- Naked Triple
- Naked Pair
- 2-String Kite
- Finned X-Wing
- Box-Line Reduction
- UR Type 1
- Forcing Chains
- Simple Coloring
- XY-Chain
- Skyscraper