Forced Variations

Whenever we are calculating variations, we should first consider those which force our opponent into a specific reaction. Forced variations lie at the heart of the calculation of variations. Moreover, they are easier to calculate and give us more security. 
In every position we must first look for the active moves: checks, captures, mating threats or attacks on opposing pieces. It is these moves which have the highest level of priority. Checks are especially useful since the opponent has only a limited number of replies. It is often possible to totally determine the future course of the game if the opponent is given only a single possible reply.

Sounds like the logic of forced variations.