Indian Defense: Colle System, King's Indian Variation

The Indian Defense: Colle System, King's Indian Variation is a chess opening classified under ECO code A48 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. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. Bd3 d6. The resulting position leaves white to move.