Colle System
You play White · 7 variations
Mixed practice
The machine picks a different variation every time.
Take a quiz
10 positions: find the next theory move in each. No take-backs, no hints.
Main variations · 4
- Colle SystemD051. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 5. O-O c5 6. b3 Be7 7. Bb2 O-O 8. Nbd2 d58 moves
- Colle SystemD051. d4 d5 2. Nf3 Nf6 3. e3 e6 4. b3 c5 5. Bb2 Nc6 6. Bd36 moves
- Colle SystemD051. d4 d5 2. Nf3 Nf6 3. e3 e6 4. b3 c5 5. Bb2 Nc6 6. Nbd26 moves
- Colle System, Traditional ColleD051. d4 Nf6 2. Nf3 e6 3. e3 c5 4. Bd3 d5 5. c35 moves
Other variations · 3
What is the Colle System?
The Colle System is a quiet set-up for White that starts 1.d4 d5 2.Nf3 Nf6 3.e3, usually followed by Bd3, c3, Nbd2 and O-O. You build a solid pawn pyramid on c3, d4 and e3, leave the dark-squared bishop behind it for now, and prepare the central break e4. The game is closed and positional at first, but once e4 opens the centre your pieces are already aimed at the black king. It is a system rather than a theoretical opening: popular at club level, rarer at the top, and playable against almost any black set-up.
Main ideas and plans
The classical plan, the Colle-Koltanowski, is to complete development and play e4 with support from Qc2 or Re1, as in 1.d4 d5 2.Nf3 Nf6 3.e3 e6 4.Bd3 c5 5.c3 Nc6 6.Nbd2 Bd6 7.O-O O-O 8.dxc5 Bxc5 9.e4. If you can follow up with e5 and drive the f6-knight away, ideas such as the Greek gift sacrifice on h7 or Ng5 with Qh5 appear. The Traditional Colle, 1.d4 Nf6 2.Nf3 e6 3.e3 c5 4.Bd3 d5 5.c3, reaches the same structure by another move order. In the Colle-Zukertort you play b3 and Bb2 instead of c3, so the long-diagonal bishop supports e4 or a knight on e5.
Black's best replies try to blunt e4. Developing the light-squared bishop to f5 or g4 before ...e6 contests e4 directly, and a King's Indian set-up with ...g6 and ...Bg7 makes the break less dangerous. Against fianchetto lines with ...c5 and an early queen check, such as the Pterodactyl Variation 1.d4 g6 2.Nf3 Bg7 3.e3 c5 4.Bd3 Qa5+, block with c3, Nbd2 or Bd2 and keep your pieces coordinated rather than chasing pawns; the Siroccopteryx and Rhamphorhynchus Variations are related tries with the same queen check. If Black plays ...c4 to gain queenside space, retreat the bishop to c2 and push e4 anyway.
Who is it for?
The Colle suits players who want a dependable queen's pawn system with little memorisation and clear plans, and it is an excellent first d4 opening for improving club players. Its downside is modesty: accurate play lets Black equalise comfortably, and an e4 push at the wrong moment only loosens your centre. Learn the timing of e4 and when to exchange on c5 first, and study the Greek gift sacrifice on h7, which decides many Colle games.