Ruy Lopez: Exchange Variation

The typical move order of Ruy Lopez opening is
  1. e4 e5
  2. Nf3 Nc6
  3. Bb5 a6
Here in 4th move White captures the Knight on c6 known as Exchange Variation

(A)…Bg4 Variation first:-

Let’s have a look at following game played on same line

(B)…Ne7 Variation:-

(C)…Bd6 Variation:-

(D) …Qd6 Variation:-

let’s checkout a beautiful game between Memedeyarov and Swidler on this line:-