411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bb5/3...a6/4. Ba4/4...Bc5
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Morphy Defence rd bd qd kd nd rd pd pd pd pd pd pd pd nd bd pd bl pl nl pl pl pl pl pl pl pl rl nl bl ql kl rl
4...Bc5
Black develops the bishop and attacks the f7 pawn
5.Nxe5 is the main move
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Bc5
References
Ruy Lopez