D04
Queen's Pawn Game: Colle System, Grunfeld Formation
1. d4 d5 2. Nf3 Nf6 3. e3 g6 4. Bd3 Bg7
The Queen's Pawn Game: Colle System, Grunfeld Formation is a chess opening classified under ECO code D04. It is reached after the moves 1. d4 d5 2. Nf3 Nf6 3. e3 g6 4. Bd3 Bg7.
It belongs to the Queen's Pawn Game family — one of many ways the line can branch. Understanding the parent system’s plans is the fastest way to play this variation well.
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