Dual Threat Attacking Lever
Recognizing Opening Threats

Black to move

Probably best for Black is

6...exd4

[ 6...Na5 is another move which deals with the dual threats of Qb3 and Ng5.]

7.cxd4

[ 7.Ng5 Ne5 ]

7...d5 8.exd5 Na5

This is an example of recognizing and dealing with threats. In order to progress in chess one must be able to do this.