Unique Rectangle Type 6
One digit forms strong links along two opposite sides, fixing that digit to one diagonal pair. It goes from the other diagonal pair.
How it works on this board
Strong links on 2 along two opposite sides fix 2 to one diagonal pair
2
8
6
7
5
3
7
9
8
5
3
6
2
5
3
6
7
9
5
7
6
3
9
9
6
1
3
7
8
5
5
6
7
5
7
5
2
7
7
4
1
5
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