D05
Queen's Pawn Game: Colle System, Traditional Colle
1. d4 Nf6 2. Nf3 e6 3. e3 c5 4. Bd3 d5 5. c3
The Queen's Pawn Game: Colle System, Traditional Colle is a chess opening classified under ECO code D05. It is reached after the moves 1. d4 Nf6 2. Nf3 e6 3. e3 c5 4. Bd3 d5 5. c3.
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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