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Evil · Puzzle #747
7
9
3
2
3
4
6
9
8
7
4
6
1
7
5
3
4
2
6
1
9
5
8
9
Techniques used
- Hidden Single
- Naked Quad
- Pointing Pair
- Naked Triple
- Naked Pair
- Finned X-Wing
- Forcing Chains
- Naked Single
- Box-Line Reduction
- X-Wing
- W-Wing
- XY-Chain
"Mathematics is the music of reason." — James Joseph Sylvester
"Mathematics is the music of reason." — James Joseph Sylvester
"Hard work beats talent when talent doesn't work hard." — Tim Notke
"Hard work beats talent when talent doesn't work hard." — Tim Notke