Edge template IV2j

Template IV2-j is a 4th row edge template with 2 stones.

Red can connect the stone marked "↑" to the edge. Red cannot guarantee to connect the other stone.

(From: www.drking.org.uk)

Defending the template

Red has two threats:

and

To attempt blocking, Blue must play in one of the two cells where these threats overlap. If Blue plays in upper one of these cells, Red responds as follows:

Red 4 is connected to the bottom and also to the top by one of the two fields marked "+".

If Blue plays in the other overlap, Red responds as follows:

Cutting off the other stone

As mentioned, this does not give a connection down for the left stone. If Red keeps the right stone

connected down within the template, then the sequence of Blue cutting off the left stone is shown above.

See also

Multiple threats