PlaySudoku.us
Medium · Puzzle #161
3
9
6
7
9
9
1
4
2
8
2
1
7
9
8
4
1
7
9
6
5
8
2
1
7
4
5
8
3
1
9
"The infinite! No other question has ever moved so profoundly the spirit of man." — David Hilbert
"The infinite! No other question has ever moved so profoundly the spirit of man." — David Hilbert
"Give me six hours to chop down a tree and I will spend the first four sharpening the axe." — Abraham Lincoln
"Give me six hours to chop down a tree and I will spend the first four sharpening the axe." — Abraham Lincoln