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Medium · Puzzle #609
1
4
9
1
9
8
2
5
2
1
4
5
6
3
7
7
5
2
3
1
3
5
1
3
7
2
2
8
7
2
9
6
"Learning never exhausts the mind." — Leonardo da Vinci
"Learning never exhausts the mind." — Leonardo da Vinci
"As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality." — Albert Einstein
"As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality." — Albert Einstein