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Evil · Puzzle #706
3
9
4
2
6
8
5
4
7
2
4
3
3
6
1
2
1
4
5
8
6
2
9
5
6
8
1
Techniques used
- Hidden Single
- Naked Quad
- Pointing Pair
- Box-Line Reduction
- Skyscraper
- Naked Single
- Naked Triple
- W-Wing
- Finned X-Wing
- XY-Chain
- Naked Pair
When a box has only two empty cells, you know exactly which two digits fill them.
When a box has only two empty cells, you know exactly which two digits fill them.
"The more I read, the more I acquire, the more certain I am that I know nothing." — Voltaire
"The more I read, the more I acquire, the more certain I am that I know nothing." — Voltaire