PlaySudoku.us
Hard · Puzzle #86
6
9
7
4
5
3
9
5
7
1
8
2
6
1
7
2
9
3
9
6
5
1
7
4
5
6
"Mathematics is not about numbers, equations, or algorithms — it is about understanding." — William Paul Thurston
"Mathematics is not about numbers, equations, or algorithms — it is about understanding." — William Paul Thurston
"Champions keep playing until they get it right." — Billie Jean King
"Champions keep playing until they get it right." — Billie Jean King