Ruy Lopez, 5.O-O
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| Ruy Lopez, Morphy Defense 5.0-0 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
In chess, C78 is the ECO code for the Ruy Lopez, Morphy Defense 5.0-0 chess opening. The game begins 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0-0. The main lines here contain the Black counterthrust ...b5 with ...Bc5. The theme is similar to a Giuoco Piano. The Black bishop is on a more active square than the usual e7 but White has d4 which forces the bishop away.
