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Evil · Puzzle #871
8
9
7
9
8
4
6
1
4
5
7
6
2
8
7
9
1
8
1
4
2
2
5
4
Techniques used
- Hidden Single
- Naked Quad
- Naked Single
- Pointing Pair
- Pointing Triple
- Box-Line Reduction
- Forcing Chains
- Naked Triple
- Naked Pair
"What is a proof? It is a demonstration that a statement is necessarily true — a guarantee that no exception can exist." — Henri Poincaré
"What is a proof? It is a demonstration that a statement is necessarily true — a guarantee that no exception can exist." — Henri Poincaré
"The man who asks a question is a fool for a minute, the man who does not ask is a fool for life." — Confucius
"The man who asks a question is a fool for a minute, the man who does not ask is a fool for life." — Confucius