411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Bc5/4. Bxf7/4...Kxf7/5. Nxe5
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Jerome Gambit
5. Nxe5+
This move sacrifices another piece, but White will soon get it back with d4 or Qh5+. They will have gotten a second pawn for the piece, but would have lost the bishop pair and their own king would not be able to get out of the center. Therefore, the compensation is not nearly enough and Black is close to winning. Do not sacrifice unless you see reason. Here, White didn't have enough development to attack the king successfully.
Theory table
Jerome Gambit 5. ... Nxe5 6. Qh5+ Ke6!?
References
See also