D04
Colle System
1. d4 d5 2. Nf3 Nf6 3. e3
In the Colle System, aim to understand the plans and pawn structures, not just memorize the first moves.
The Colle System is a chess opening classified under ECO code D04. It is reached after the moves 1. d4 d5 2. Nf3 Nf6 3. e3: 5 moves in, with Black to play.
Learn its typical plans and pawn structures rather than memorizing moves — that’s what holds up over the board.
2 named variations branch from this position; the list at the end of the page goes one move deeper into each.
Play the Colle System? See where you go wrong.
Deepline reviews your real games, finds the exact moves that cost you, and trains the fixes.
Analyze my games free →Variations of the Colle System
- Pterodactyl Variation1. d4 g6 2. Nf3 Bg7 3. e3 c5 4. Bd3 Qa5+
- Siroccopteryx Variation1. d4 g6 2. Nf3 Bg7 3. e3 c5 4. Bd3 cxd4 5. Nxd4 Qa5+