English Opening, Anglo-Grünfeld Defense

The Anglo-Grünfeld Defense is identified by White playing c4 and Nc3 while Black develops the knight to f6 and advances the d-pawn to d5. With ...d5, Black does not wait for White to occupy the center, but contests it immediately.

White may capture on d5. If Black recaptures with the knight from f6, that knight becomes active in the center, although White may attack it and make it move again. Black also often plays ...g6 and develops the bishop to g7. This setup is called a fianchetto: a pawn moves one square to open a long diagonal for its bishop.

The name Anglo-Grünfeld signals a family resemblance, not an automatic full Grünfeld Defense. If White later advances the d-pawn to d4, the game may transpose, meaning it reaches a Grünfeld position through a different move order. If that pawn stays back, the game keeps independent English Opening features. The Anglo-Indian Defense is broader because it is defined by 1.c4 Nf6 before ...d5.