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Evil · Puzzle #748
6
7
9
4
5
3
9
2
5
2
1
6
3
5
9
1
8
9
5
4
2
4
2
3
1
7
Techniques used
- Naked Single
- Hidden Single
- Naked Pair
- Naked Quad
- Box-Line Reduction
- UR Type 4
- Forcing Chains
"The greatest enemy of knowledge is not ignorance; it is the illusion of knowledge." — Stephen Hawking
"The greatest enemy of knowledge is not ignorance; it is the illusion of knowledge." — Stephen Hawking
"Chess is the art of analysis." — Mikhail Botvinnik
"Chess is the art of analysis." — Mikhail Botvinnik