Queen's Pawn Game: Colle System, Traditional Colle

1.
1. d4
2. Nf6
2.
3. Nf3
4. e6
3.
5. e3
6. c5
4.
7. Bd3
8. d5
5.
9. c3

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The Queen's Pawn Game: Colle System, Traditional Colle is a chess opening classified under ECO code D05 (Closed & Semi-Closed games). It is a variation of the Queen's Pawn Game family. Step through the moves on the board above, then play the line yourself or review it with the built-in engine.