E07Black66 book lines continue
Closed
Catalan Opening1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O Nbd7
Also known as Catalan: Closed, 6...Nbd7, Catalan Opening: Closed Variation, 5. Nf3 O-O 6. O-O Nbd7, Catalan Opening, Closed Variation.