Why does black gain from this "center fork trick"? In the following position, Bc4 by white is evaluated as a bad move that can be punished by ...Nxe4.
Although I can see why it tactically works, I fail to see how the resulting position favors black. Do you have any insights about why it's better for black, and what are the plans that follow ...Nxe4?
[fen &quot;rnbq1rk1/ppp1ppbp/3p1np1/8/2BPP3/2N2N1P/PPP2PP1/R1BQK2R b KQ - 1 0&quot;]

1...Nxe4 2.Nxe4 (2.Bxf7+ Rxf7 3.Nxe4) d5 3.Bd3 dxe4 4.Bxe4
White is enjoying a space advantage in the center, but not anymore after ...Nxe4. It would be the &quot;equivalent&quot; of playing a ...d5 push, which unfortunately doesn't work in this position.
White can reply to 1...Nxe4 with either 2.Nxe4 d5 3.Bd3 dxe4 Bxe4, which would leave Black with an at least equal position, or with 2.Bxf7+ Rxf7 3.Nxe4 which would allow Black to start putting pressure on the center (let's think of moves like ...Nc6 and ...e5 for instance)