Mainline ...Bg4 Pin

1.e4 d5 2.exd5 Qxd5 3.Nc3 Qd6 4.d4 Nf6 5.Nf3 Bg4

Black chooses active bishop development from the Qd6 setup and immediately pressures White's knight. White keeps central control and aims for efficient development.

ECO Code

B01

Difficulty

Intermediate

Style

Classical/Active

Key Theme

Early pin pressure

Practical Plans

White Plan

h3, Be2, 0-0

White can question the pin and keep steady central pressure.

Black Plan

...Nbd7, ...e6, ...Be7

Black supports the pin concept and aims for smooth equalization.

Key Point

Pin timing

The bishop on g4 is useful only if followed by fast coordinated development.

Common Pitfalls

For White: Ignoring the pin can lead to tactical issues in the center.

For Black: Overcommitting to the pin may lose time after h3-g4 ideas.

Active Qd6 Development Plan

This line is practical for players who like active piece development with clear structure.

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