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Hard · Puzzle #474
8
6
7
1
3
7
6
9
6
3
1
6
8
2
1
9
4
5
2
9
4
8
5
3
8
9
"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