PlaySudoku.us
Expert · Puzzle #687
5
3
2
1
6
4
5
8
1
3
7
9
6
2
7
8
2
5
2
1
9
3
3
1
8
4
Techniques used
- Hidden Single
- Pointing Pair
- Naked Single
- Naked Pair
- XY-Chain
"Knowledge is power." — Francis Bacon
"Knowledge is power." — Francis Bacon
"Be yourself; everyone else is already taken." — Oscar Wilde
"Be yourself; everyone else is already taken." — Oscar Wilde