The Catalan, an opening repertoire for life Vol.2 - Closed Catalan

1.d4 Nf6 2.Nf3 e6 3.c4 d5 4.g3 - Introduction

1.d4 Nf6 2.Nf3 e6 3.c4 d5 4.g3 - Introduction The Closed Catalan is introduced by not taking immediately on c4. The Main line is 4...Bb4+.