PlaySudoku.us
Hard · Puzzle #607
9
7
1
8
3
9
6
5
4
8
3
7
7
2
6
3
1
2
7
6
2
8
3
2
9
2
5
1
4
"To know what you know and what you do not know — that is true knowledge." — Confucius
"To know what you know and what you do not know — that is true knowledge." — Confucius
"The scientists of today think deeply instead of clearly. One must be sane to think clearly, but one can think deeply and be quite insane." — Nikola Tesla
"The scientists of today think deeply instead of clearly. One must be sane to think clearly, but one can think deeply and be quite insane." — Nikola Tesla