PlaySudoku.us
Expert · Puzzle #135
2
4
1
4
7
2
5
1
7
1
3
8
6
5
8
8
6
3
1
6
4
3
5
4
9
2
Techniques used
- Hidden Single
- Naked Single
- Pointing Pair
- Naked Pair
- Box-Line Reduction
- Hidden Pair
- Skyscraper
- Naked Quad
- Naked Triple
"A mathematician, like a painter or poet, is a maker of patterns." — G. H. Hardy
"A mathematician, like a painter or poet, is a maker of patterns." — G. H. Hardy
"Somewhere, something incredible is waiting to be known." — Carl Sagan
"Somewhere, something incredible is waiting to be known." — Carl Sagan