PlaySudoku.us
Hard · Puzzle #507
3
1
8
3
2
2
8
7
3
5
5
3
8
1
4
1
6
5
4
8
9
2
5
1
9
4
2
5
7
6
1
"In mathematics, the art of proposing a question must be held of higher value than solving it." — Georg Cantor
"In mathematics, the art of proposing a question must be held of higher value than solving it." — Georg Cantor
"In mathematics, the art of proposing a question must be held of higher value than solving it." — Georg Cantor
"In mathematics, the art of proposing a question must be held of higher value than solving it." — Georg Cantor