Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Nf6/4. d4/4...exd4/5. O-O/5...Nxe4/6. Nc3/6...dxc3/7. Bxf7/7...Kxf7/8. Qd5/8...Kf6/9. Re1/9...Ne7/10. Qxe4

= Nakhmanson Gambit, Kf6 Defence, Rook Attack =

10. Qxe4
In the analogous position with a knight on c6 and a bishop on e7, Black needs to  play 10…d5 to avoid a draw by repetition. Here 10…d5 would be inaccurate, but not immediately fatal: 11.Qf4+ forces Black to self-pin with 11…Bf5 (11…Nf5??  12.Qg5+) and then White has a pleasant choice between g4 and Nd4 to exploit  the pin.

Black preserves the piece and the advantage by simply running away with 10...Kf7. Now that the e7-knight covers d5 and f5, the king can hide on g8 without getting checkmated by a queen on d5, which is always a  plus.