A37Black12 book lines continue
Symmetrical Variation, Botvinnik System Reversed, with Nf3
English Opening1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 e5
Also known as English: Symmetrical, 5.Nf3 e5, English Opening, Symmetrical Variation, English: symmetrical, Botvinnik system reversed.