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Evil · Puzzle #446
2
7
8
1
3
2
9
9
4
1
1
2
7
4
3
2
5
1
8
3
5
5
7
4
1
4
6
Techniques used
- Hidden Single
- Naked Quad
- Pointing Pair
- Naked Single
- XY-Wing
- 2-String Kite
- Naked Pair
- Finned X-Wing
- XY-Chain
- Naked Triple
- Skyscraper
"The more constraints one imposes, the more one frees oneself. And the arbitrariness of the constraint serves only to obtain precision of execution." — Igor Stravinsky
"The more constraints one imposes, the more one frees oneself. And the arbitrariness of the constraint serves only to obtain precision of execution." — Igor Stravinsky
"Young man, in mathematics you don't understand things. You just get used to them." — John von Neumann
"Young man, in mathematics you don't understand things. You just get used to them." — John von Neumann