Queen's Pawn Game: London System: what should Black play?

In this common tabiya of the Queen's Pawn Game: London System, Black's most reliable and heavily favored continuation is e6. Chosen in 72.4% of recorded games (over 1.04 million times), this move blunts White's dark-squared bishop, reinforces the central d5 pawn, and prepares kingside piece development. Computer analysis rates e6 as the objective best choice with an evaluation of +0.13, holding White to a 53.1% scoring rate.

The strategic case for e6

By playing e6, Black completes the initial development of the light-squared bishop outside the pawn chain before locking the central structure. The move allows immediate development of the dark-squared bishop to d6 or e7, facilitating rapid kingside castling. The engine's illustrative continuation runs e6 h3 Bxf3 Qxf3 Bd6 c3, where Black trades the bishop on f3 to eliminate White's active piece and immediately contests the key diagonal with the bishop on d6.

Alternative continuations

Black possesses several viable alternatives to the primary continuation. The most aggressive strike against White's center is c5, which appears in 2.3% of games with an engine evaluation of +0.18 and a 52.4% score for White, featuring the illustrative line c5 Nbd2 cxd4 exd4 e6 h3. Alternatively, natural piece development can be prioritized with Nbd7 (5.0% of games, +0.18 evaluation, 54.1% White score), leading to Nbd7 h3 Bxf3 Qxf3 e6 Nd2, or Nc6, selected in 15.3% of games with an evaluation of +0.27 and leading into Nc6 Nbd2 e6 h3 Bxf3 Nxf3. A quieter setup is c6 (4.9% of games, +0.34 evaluation), which often continues c6 Nbd2 e6 h3 Bxf3 Qxf3.