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Y-Wing
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6/7, 6/8 and 7/8 make a Y-wing.
Rule out the 8s it removes.
1
5
6
8
2
1
9
7
2
6
8
2
3
6
9
1
9
2
5
1
3
4
6
7
8
1
4
8
7
2
3
2
9
6
7
8
5
1
2
4
1
5
7
8
8
8
1
3
2
5
6
7
5
4
7
3
9
1
6
8
2
Rule out 8
Rule out 6
Rule out 7
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