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Evil · Puzzle #721
5
6
9
9
3
7
4
5
2
8
4
1
3
9
9
2
8
7
5
4
6
2
3
2
1
4
Techniques used
- Naked Single
- Hidden Single
- Pointing Triple
- Pointing Pair
- XY-Wing
- Naked Pair
- Forcing Chains
- XY-Chain
Use pencil marks to track candidates. Eliminating one candidate often triggers a chain reaction.
Use pencil marks to track candidates. Eliminating one candidate often triggers a chain reaction.
"Mathematics is the only place where truth and beauty mean the same thing." — Danica McKellar
"Mathematics is the only place where truth and beauty mean the same thing." — Danica McKellar