Edge template III2e
From HexWiki
Edge template III-2e is a 3rd row edge template with two stones. Red can guarantee connecting both stones to the edge.
(From: www.drking.org.uk)
Defending the template
Red has two main threats by playing at "A" or "B":
and
These moves lead to an easy direct connection. Because there is no common empty hex used in both threats, Blue cannot prevent Red from linking to the bottom.