Queen's Pawn Game: Colle System

1.d4 d5 2.Nf3 Nf6 3.e3

ECO D04

The Queen's Pawn Game: Colle System is a chess opening line in the Queen's Pawn Game complex, reached after 1.d4 d5 2.Nf3 Nf6 3.e3.

It is catalogued under code D04 in the Encyclopaedia of Chess Openings (ECO).

The defining move e3 is chosen by White on move 3.

3 named continuations branch from this position, including the Anti-Colle and the Grünfeld Formation.

Named variations

Study this line with a grandmaster

This position is covered in the Beat the London System course: a GM-authored repertoire you study move by move, then practice against a human-like AI opponent.

Every chess term used here is defined in the chess terms glossary. Browse all opening courses or the full ECO code index.