PlaySudoku.us
Evil · Puzzle #161
5
3
9
4
6
8
5
1
4
7
9
7
3
1
2
4
2
9
2
8
9
7
8
2
Techniques used
- Naked Single
- Hidden Single
- Naked Pair
- Naked Triple
- Pointing Pair
- Box-Line Reduction
- W-Wing
- UR Type 4
- Forcing Chains
"There is no permanent place in mathematics for ugly mathematics." — G. H. Hardy
"There is no permanent place in mathematics for ugly mathematics." — G. H. Hardy
"Think for yourself and let others enjoy the privilege of doing so too." — Voltaire
"Think for yourself and let others enjoy the privilege of doing so too." — Voltaire