Colle: 5.c3 Nc6 6.Nbd2 Bd6

ECO code: D05

1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Bd3 c5 5. c3 Nc6 6. Nbd2 Bd6

Opening Name: Colle: 5.c3 Nc6 6.Nbd2 Bd6

Moves: 1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Bd3 c5 5. c3 Nc6 6. Nbd2 Bd6

Description: This variation of the Colle System features a solid and flexible setup for White, aiming to build a strong pawn center with c3 and d4. The move 5.c3 supports the center and prepares for a later e4 push. Black responds actively with 5...Nc6, putting pressure on the d4 pawn and contesting the center. White develops the knight to d2, reinforcing the center and preparing to support an eventual e4 advance. Black's move 6...Bd6 develops the bishop to an active square, eyeing the h2 pawn and helping control the central squares.

Characteristic: The Colle setup is known for its solid structure and harmonious piece placement, focusing on a strong center and a potential kingside attack. The moves 5.c3 and 6.Nbd2 are characteristic moves reinforcing the d4 pawn and preparing for e4. Black's ...Nc6 and ...Bd6 are natural developing moves aimed at challenging White's center and activating pieces.

Attacking or Defensive: From White’s perspective, the setup is primarily positional and preparatory, aiming for a controlled and steady buildup rather than immediate attacks. White can transition into an attacking posture with e4 and potential kingside play later. Black’s moves are active and contesting, challenging White’s center and preparing to counterattack.

Center Control: Yes, this opening directly contests the center. White’s plan revolves around maintaining a strong pawn center with d4 and c3, while Black applies pressure through ...c5 and ...Nc6. Control over the central squares is a key theme for both sides in this line.

Opening Preview

This opening is defined by the position shown on the board below. The moves displayed are a typical sequence that leads to it, but different sequences can reach the same position and still carry the same opening name.

Related Puzzles

Practice puzzles and train your tactics with real positions from games that used the Colle: 5.c3 Nc6 6.Nbd2 Bd6, and sharpen your opening mastery.

Puzzle 1 of 3 - Move #9 black