English Opening: Anglo-Indian Defense, Anti-Anti-Grünfeld

The English Opening: Anglo-Indian Defense, Anti-Anti-Grünfeld is a chess opening classified under ECO code A15 in the Flank Openings family, characterized by moves like 1.c4, 1.Nf3, or 1.f4, aiming to control the center indirectly. It is reached after 4 moves: 1. c4 Nf6 2. Nc3 g6 3. Nf3 Bg7 4. e4. The resulting position leaves black to move.