Template VI1/Intrusion on the 3rd row

Red should go here:

The Red 1 hex is connected to the bottom, and threatens to connect to the top through either one of the "+" hexes. Thus these are the only important incursions. An incursion to the right of the number 1 hex is important only in connection with the two indicated here, and will be seen in the treatement below transposed into the sequel.

Third-row followup: i4

Red threatens to play at "+" points above, with these two templates:

Edge template IV1a

We need only consider the intersection of these two templates

Third-row followup i4 and incursion at k4

Third-row followup i4 and incursion at j5

Third-row followup i4 and incursion at i6

Third-row followup i4 and incursion at j6

Third-row followup i4 and incursion at h7

Third-row followup i4 and incursion at i7

Third-row followup: j3 (stub)