Ruy Lopez
One of the oldest and deepest-analysed openings, 1.e4 e5 2.Nf3 Nc6 3.Bb5.
The Ruy Lopez (or Spanish Opening, 1.e4 e5 2.Nf3 Nc6 3.Bb5) pins or pressures the knight defending e5 and has been a top-level battleground for over a century, from Steinitz to modern engines.
Related terms