Edge template III1b

The edge template III-1-b
R3 C5 Sa1 Sb1 Vd1 Sa2 Sc3

Red has two main threats: R3 C5 Sa1 Sb1 Pc1 Vd1 Sa2 Vb2 Pc2 Pa3 Pb3 Sc3 and

R3 C5 Sa1 Sb1 Vd1 Pe1 Sa2    Pd2 Ve2 Sc3 Pd3 Pe3

These moves lead to easy direct connection. Because there is no common hex used in both threats, Blue cannot prevent Red to link to the bottom.