Chess Opening Theory/1. e4/1...e5/2. Nc3/2...Nf6/3. Bc4/3...Nxe4/4. Nxe4

= Vienna Game, Falkbeer Defence = 4. Nxe4 is not the best option, Black gets a better position because the unfortunate position of the white knight in e4.

Theory table
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1.e4 e5 2.Bc4 Nf6 3.Nc3 Nxe4 4.Nxe4

1.e4 e5 2.Bc4 Nf6 3.Nc3 Nxe4 4.Nxe4 d5 5.Bxd5 Qxd5 6.Qf3 Qe6 7.d3 Nc6 8.Ne2 Bd7 9.Be3 Nb4 *