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Expert · Puzzle #175
8
2
8
1
5
9
1
9
7
2
1
3
9
4
7
6
4
8
6
2
7
8
3
8
6
1
Techniques used
- Naked Single
- Hidden Single
- Pointing Pair
- Naked Pair
- X-Wing
- Skyscraper
- Naked Quad
"The essence of mathematics lies in its freedom." — Georg Cantor
"The essence of mathematics lies in its freedom." — Georg Cantor
"Be curious, not judgmental." — Walt Whitman
"Be curious, not judgmental." — Walt Whitman