English Opening: King's English Variation: what to play after Qxd4?

In this position from the English Opening: King's English Variation, Black's primary and most effective response is Nc6, developing a minor piece while directly attacking White's queen on d4. While engines narrowly favor Nf6 at an evaluation of -0.13, Nc6 remains the overwhelmingly popular practical choice with an evaluation of -0.12. Both choices comfortably equalize by accelerating Black's development against White's exposed central piece.

Mainline development with Nc6

The immediate attack on d4 makes Nc6 the dominant choice in the database, selected in 78.0% of games (5.46M recorded). White scores 50.1% against this natural developing move, which forces White to address the queen's safety. In the engine main line Nc6 Qd1 Nf6 Nc3 Bb4 Bd2, White retreats the queen directly back to d1, conceding a tempo that allows Black to smoothly develop toward kingside castling with active piece play.

The flexible alternative Nf6

Ranking first in pure engine preference is Nf6, chosen in 16.7% of games (1.17M recorded) with White scoring 51.4%. Instead of immediately harassing the queen, Black prepares kingside activity and controls central squares. The continuation Nf6 Nc3 Nc6 Qd1 Bb4 Bd2 typically transposes into the same piece setup as the primary line, underscoring the structural interchangeability between Black's two knight jumps on move two.

Secondary setups

Other options are played far less frequently and concede slightly higher evaluations to White. The move d6 appears in 2.7% of games (188K recorded) with an evaluation of +0.11, where White scores 53.5% following d6 e4 Nc6 Qd1 g6 Nc3. The early queen move Qf6 accounts for 2.5% of games (177K recorded) with an evaluation of +0.18 and a 52.4% White score, leading to Qf6 e3 Nc6 Qd1 Bb4+ Nd2. Finally, a5 is evaluated at +0.08 with the continuation a5 Nc3 Nc6 Qd3 Nf6 Nf3, though standard knight development remains objectively superior.