PlaySudoku.us
Medium · Puzzle #527
7
5
8
6
6
5
4
8
7
1
3
1
6
8
7
5
6
9
1
2
4
6
9
2
1
8
5
7
3
1
2
4
3
7
9
5
1
"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