Two-String Kite
A digit has two places in a row and two in a column, and one end of each shares a box. The digit goes from the cell the other two ends both see.
How it works on this board
Two strong links on 5 are joined by one weak link
6
4
8
2
7
8
7
6
2
4
3
3
2
1
8
2
6
1
8
4
4
1
2
9
7
9
7
2
1
4
3
2
7
7
3
8
1
5
4
2
5
4
2
9
7
6
8
1
3
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