: White prepares a rapid e4 breakthrough or a nasty queenside expansion with Nb5, targeting the c7 square.
To build a comprehensive chess opening repertoire, you must have a concrete answer for Black's most popular setups. Below is a blueprint for a cohesive 1.d4 system designed to maximize practical winning chances. 1. The Catalans: Demolishing the Queen's Gambit Declined
Against 1...c5, playing followed by 3.f4 signals aggressive intent.