The Catalan Opening: Essentials (Black Repertoire)
By Theo van Stratum
A Black repertoire for the Catalan Opening (1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2), covering replies to White's main approaches: 5.Qa4+ (recovering the gambit pawn immediately, with check), the calmer Classical Build-Up, the Closed Catalan Main Line, and the older Hort System with 5.Na3.