PlaySudoku.us
Medium · Puzzle #683
5
2
8
4
1
6
5
3
9
1
7
9
8
2
2
8
9
3
4
7
5
1
9
3
6
4
6
4
2
8
2
1
4
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
"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