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French Defense: Diemer-Duhm Gambit: Moves, Plans & Analysis

The position

What French Defense: Diemer-Duhm Gambit puts on the board

Material is level, with black to move.

White has central pawns on d4 and e4; Black has central pawns on d5.

White can still castle either side; Black can still castle either side.

White’s plan

What White is trying to build

Support the d4–e5 pawn chain and use the extra kingside space.

Prepare c3 and develop before deciding whether to attack with f4.

Black’s plan

How Black challenges it

Challenge White’s centre with …c5 and often …f6.

Pressure d4 and solve the light-squared bishop before the position closes.

The idea

The tactical pattern to recognise

Pressure on d4 from …c5 and …Qb6.

The e5 pawn can become the base of a kingside attack or a target after …f6.

The mistake

What to check before committing

Defending d4 mechanically while falling behind in development.

Playing …f6 before the black king and e6 pawn are tactically secure.

Continue

Choose the next book move

Preview a move to see the resulting position and the idea behind it. Select it to continue on the same board.