Related Openings
Ruy Lopez - Old Steinitz defense, Semi-Duras Variation	e4, e5, Nf3, Nc6, Bb5, d6, d4, Bd7, c4
Ruy Lopez - Old Steinitz defense, Nimzovich attack	e4, e5, Nf3, Nc6, Bb5, d6, d4, Bd7, Nc3, Nf6, Bxc6