Edge template IV1d

This template has first been mentioned by Mike Amling on David King's Hex template page

Template reductions

There is one place that is covered by all template reductions. The only chance for Blue to prevent Red from connecting to bottom is to play in this area.

Development of the remaining case

More Reductions

Let's study this position with template reductions:

First Attempt for Blue

Second Attempt for Blue

This leads to edge template IV2b.