PlaySudoku.us
Expert · Puzzle #836
4
2
8
9
2
6
7
7
6
5
8
1
8
7
9
5
8
5
9
1
3
2
1
2
8
6
Techniques used
- Hidden Single
- Naked Triple
- Pointing Pair
- Naked Single
- Skyscraper
- XY-Wing
"What we know is a drop; what we don't know is an ocean." — Isaac Newton
"What we know is a drop; what we don't know is an ocean." — Isaac Newton
"A theory that is not refutable by any conceivable event is non-scientific." — Karl Popper
"A theory that is not refutable by any conceivable event is non-scientific." — Karl Popper