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Evil · Puzzle #778
1
3
9
8
6
2
3
5
2
7
9
4
1
3
1
8
2
2
6
5
3
7
6
4
Techniques used
- Hidden Single
- Naked Single
- Naked Quad
- Pointing Pair
- 2-String Kite
- Finned X-Wing
- Forcing Chains
- XY-Chain
- Naked Pair
- Naked Triple
- XY-Wing
- W-Wing
"Science is the great antidote to the poison of enthusiasm and superstition." — Adam Smith
"Science is the great antidote to the poison of enthusiasm and superstition." — Adam Smith
"Beauty is the first test: there is no permanent place in the world for ugly mathematics." — G. H. Hardy
"Beauty is the first test: there is no permanent place in the world for ugly mathematics." — G. H. Hardy