Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Bc5/4. Bxf7/4...Kxf7

=Jerome Gambit=

4...Kxf7!
Black has a clear advantage. White will attempt to mate the black king with a series of checks, but with proper play black will come out ahead. His bishop pair and lead in development make it impossible to find enough compensation.

Theory table
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'''1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Bxf7 Kxf7'''