PlaySudoku.us
Expert · Puzzle #865
7
1
8
6
9
3
3
1
8
2
4
1
7
8
8
3
5
8
2
4
5
4
6
Techniques used
- Naked Single
- Hidden Single
- Naked Triple
- X-Wing
- XY-Wing
Some hospitals use Sudoku as a cognitive exercise for patients recovering from strokes or brain injuries.
Some hospitals use Sudoku as a cognitive exercise for patients recovering from strokes or brain injuries.
"And yet it moves." — Galileo Galilei
"And yet it moves." — Galileo Galilei