PlaySudoku.us
Medium · Puzzle #665
2
5
9
3
3
6
4
4
7
2
8
6
9
5
1
2
4
3
1
9
2
4
6
7
9
2
6
1
8
9
9
1
2
8
"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
"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