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Evil · Puzzle #977
9
2
2
9
5
4
3
9
6
1
9
7
8
2
6
2
3
6
4
7
1
3
2
8
Techniques used
- Hidden Single
- Naked Pair
- Naked Quad
- Naked Single
- Pointing Pair
- Skyscraper
- Pointing Triple
- Forcing Chains
- XY-Chain
- Box-Line Reduction
- X-Wing
- W-Wing
Scan by digit rather than by cell: find everywhere '7' must go before switching to '8'.
Scan by digit rather than by cell: find everywhere '7' must go before switching to '8'.
"The only way to do great work is to love what you do." — Steve Jobs
"The only way to do great work is to love what you do." — Steve Jobs