Grouped ALS W-Wing
An outside grouped strong link joins the same candidate in two ALSs, removing their other shared candidate from cells that see both ALSs.
How it works on this board
The same candidate in two ALSs is joined by an outside grouped strong link
9
1
8
3
7
4
8
6
7
2
9
4
2
7
5
3
6
2
7
7
5
3
7
1
4
2
4
9
7
8
No marks yetPosition 0 / 2