411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bb5/3...a6/4. Nxe5
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Morphy Defence, Meadow Gambit
The best move in this position is /4...axb5/ according to Stockfish but /4...Nxe5/ is more common.