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Expert · Puzzle #883
2
8
4
1
8
6
7
5
4
9
1
2
4
6
9
7
5
5
5
3
8
2
9
4
If pointing pairs aren't visible, try box-line reduction. They're inverses — if one fails, try the other.
If pointing pairs aren't visible, try box-line reduction. They're inverses — if one fails, try the other.
"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