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Hard · Puzzle #618
8
7
6
4
2
5
2
3
1
4
5
2
9
8
6
8
3
7
1
5
2
8
7
1
4
2
8
3
"Pure mathematics is, in its way, the poetry of logical ideas." — Albert Einstein
"Pure mathematics is, in its way, the poetry of logical ideas." — Albert Einstein
"Pure mathematics is, in its way, the poetry of logical ideas." — Albert Einstein
"Pure mathematics is, in its way, the poetry of logical ideas." — Albert Einstein