B25Black5 book lines continue
Closed, Botvinnik Defense, with f4
Sicilian Defense1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e5
Also known as Sicilian: Closed, 6.f4 e5, Sicilian Defense: Closed Variation, Botvinnik Defense, Sicilian Defense, Closed Variation.