Caro-Kann: Two Knights, 3...dxe4 4.Nxe4 Nf6: what should White play?

In the Caro-Kann Two Knights variation after 3...dxe4 4.Nxe4 Nf6, Black has placed a piece onto e4 that must be addressed immediately. White's only viable option is Qxe4, which captures the undefended knight and maintains a slight advantage. Across 764K recorded games in the database, this capture occurs in 100.0% of encounters, granting White an engine evaluation of +0.36 and a 54.5% scoring rate.

Tactical Reality of the Position

White has no choice but to capture on e4, as the knight actively threatens White's pieces. Neglecting to take the piece leads to an immediate collapse in White's position. For example, passive alternatives such as d4 (evaluated at -3.73 across 29 games) or h3 (evaluated at -3.80) leave Black simply ahead a full piece without compensation. Other tries like b3 (-4.04, 4 games, 25.0% score) and Ne5 (-4.09, 10 games, 30.0% score) perform similarly poorly. Recapturing with Qxe4 is therefore the only playable move.

Engine Continuation After Qxe4

Following the central recapture with Qxe4, the queen commands the center while Black works to develop the remaining minor pieces. The primary engine continuation develops logically via Qxe4 Be6 b3 Nd7 Bc4 Bxc4. In this sequence, Black develops the bishop to e6, prompting White to reinforce the queenside and contest the light-squared diagonal. With best play, White retains comfortable central control and a modest edge (+0.36) heading into the middle game.