PlaySudoku.us
Medium · Puzzle #411
5
8
9
2
9
3
6
8
4
1
3
3
6
2
4
4
5
7
3
7
8
6
7
2
3
2
8
4
4
5
3
2
"Strive not to be a success, but rather to be of value." — Albert Einstein
"Strive not to be a success, but rather to be of value." — Albert Einstein
"What is a proof? It is a demonstration that a statement is necessarily true — a guarantee that no exception can exist." — Henri Poincaré
"What is a proof? It is a demonstration that a statement is necessarily true — a guarantee that no exception can exist." — Henri Poincaré