Edge template IV2l
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This page is about edge template IV2l (four two ell). There is also an edge template IV2i (four two eye).
The template:
(From: www.drking.org.uk)
Red can choose which of the two stones to connect to the bottom. Below, it is assumed that Red picks the stone on the right hand side.
Red has three threats. The first one uses bridges.
The second one uses template II-1-b.
The third one uses the ziggurat.
For a blocking attempt, Blue has to play on the only overlapping field:
Red 6 is connected to the bottom and can be connected to the top right by one of the fields marked with +.