411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Bc5/4. b4/4...Bxb4/5. c3/5...Bf8
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Evans Gambit Accepted: Mayet Defence
5...Bf8 (Evans Gambit Accepted: Mayet Defense)
Black retreats the bishop on f8. This is not good as it undevelops the bishop. White should play /6. d4/, taking the center, giving white a slight edge.