Bg5 Variation

1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.Bg5

White accepts the pawn and immediately pins the knight on f6. The goal is to slow Black's initiative and keep control while developing. Black usually responds by regaining the pawn with ...Nxe5 and keeping piece activity.

ECO Code

A51-A52

Difficulty

Intermediate

Style

Practical/Positional

Key Theme

Pin and develop

Typical Plans

White

Nf3, e3, Nc3

Develop and keep the extra pawn only if it doesn't cost time. The pin is useful, but development still comes first.

Black

...Nxe5 and ...Be7

Regain the pawn and aim to castle quickly. Black's compensation comes from activity and tactical threats.

Key Detail

Don't overuse the pin

If White spends too long on the pin, Black can catch up in development and the pawn advantage evaporates.

Common Pitfalls

For White: If you ignore development to keep the pin, Black can generate counterplay and win time.

For Black: If you don't regain the pawn efficiently, White will consolidate and have a clean extra pawn.

Pin, Then Develop

The Bg5 Variation is a practical choice when you want to accept the pawn and steer the game toward stable development.

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