Edge template IV2l

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:

using II-1-b

and

using the ziggurat

For a blocking attempt Blue has to play on one 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 +.