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Expert · Puzzle #62
8
7
7
5
2
7
6
3
1
6
5
4
6
4
8
8
9
4
9
6
1
2
2
3
Techniques used
- Naked Single
- Hidden Single
- Naked Triple
- Naked Quad
- Box-Line Reduction
- Skyscraper
- XY-Wing
- Naked Pair
- 2-String Kite
- XY-Chain
- X-Wing
- Pointing Pair
"Extraordinary claims require extraordinary evidence." — Carl Sagan
"Extraordinary claims require extraordinary evidence." — Carl Sagan
"The essence of mathematics lies in its freedom." — Georg Cantor
"The essence of mathematics lies in its freedom." — Georg Cantor