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Evil · Puzzle #717
5
2
4
6
3
3
6
9
8
2
7
9
4
1
6
2
8
9
3
4
1
8
7
9
Techniques used
- Hidden Single
- X-Wing
- Simple Coloring
- Pointing Pair
- Forcing Chains
- Naked Single
- Hidden Pair
- Naked Quad
- XY-Chain
- Naked Pair
- Box-Line Reduction
"Chess is the touchstone of intellect." — Johann Wolfgang von Goethe
"Chess is the touchstone of intellect." — Johann Wolfgang von Goethe
"We shape our buildings; thereafter they shape us." — Winston Churchill
"We shape our buildings; thereafter they shape us." — Winston Churchill