Blackmar-Diemer Gambit Accepted: Euwe Defense: what should White play?

In the Blackmar-Diemer Gambit Accepted: Euwe Defense (ECO D00), White seeks dynamic compensation for the sacrificed pawn, with the engine recommending Bd3 as the most precise continuation. Holding an engine evaluation of -0.39, this developing move prepares castling while taking aim at the kingside. Across opening databases containing 939,164 recorded games reaching this position, White relies on rapid piece activity to offset Black's central solidity.

Strategic aims of Bd3

The primary plan behind Bd3 is the harmonious development of the light-squared bishop to an active diagonal targeting h7. Because Black's pawn structure features an advanced pawn on e6, White maintains open lines toward the enemy king while retaining flexibility for the dark-squared bishop. An illustrative continuation demonstrating both sides fighting for central control is Bd3 c5 Be3 cxd4 Nxd4 Bb4, where Black strikes immediately at White's center and pins the knight on c3.

Alternatives for White

White possesses several other natural developing options from this tabiya. The direct pin Bg5 scores an evaluation of -0.40 and leads to Bg5 Be7 Bd3 Nc6 a3 a6, putting early pressure on Black's kingside defenders. Prophylaxis via a3 prevents enemy piece incursions onto b4 with an evaluation of -0.42, illustrated by the continuation a3 Nbd7 Bd3 c5 Qe2 cxd4. White can also select Bc4 evaluated at -0.45, or develop the queenside directly with Be3, which is evaluated at -0.50 and can lead to sharp opposite-side castling after Be3 Bd6 Qd2 O-O O-O-O Nd5.