411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Bc5/4. d4/4...Bxd4
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Italian Gambit
This capture is the best way for Black to proceed without entering the Haxo Gambit. White has nothing better to do than /5. Nxd4/ to open lines for their pieces.