4
9
6
8
5
7
7
4
9
1
1
8
7
3
6
8
7
9
7
4
6
1
9
3
7
2
3
1
5
1
8
3
8
6
2
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.
"I hear and I forget. I see and I remember. I do and I understand." — Confucius
"I hear and I forget. I see and I remember. I do and I understand." — Confucius