PlaySudoku.us
Evil · Puzzle #289
2
4
5
8
3
1
7
1
2
8
9
7
4
6
2
5
6
7
8
5
2
3
1
6
2
Techniques used
- Naked Triple
- Naked Single
- Hidden Single
- Naked Pair
- Pointing Pair
- Hidden Pair
- Simple Coloring
- UR Type 4
- Forcing Chains
- Naked Quad
- Box-Line Reduction