PlaySudoku.us
Medium · Puzzle #969
8
1
5
7
8
2
6
3
1
9
7
5
9
6
8
7
4
3
5
2
5
9
8
4
6
5
7
8
3
1
8
5
1
4
"We must know. We will know." — David Hilbert
"We must know. We will know." — David Hilbert
"Remember to look up at the stars and not down at your feet." — Stephen Hawking
"Remember to look up at the stars and not down at your feet." — Stephen Hawking