The Ruy Lopez

Spanish Opening also known as Ruy Lopez is an opening e. g. Tarrasch Blackburne 1914 in St.Peterburg
 * 1) e4 e5

2. Nf3 Nc6

3. Bb5 Nd4

4 N x d4 e x d4...

Links
Encyclopaedia of chess Openings see Volume C

Steinitz variant
https://www.youtube.com/watch?v=4QW-4YtV8h4