It seems your question should be .. why does not everybody play d4 ?
Against e4/e5 the Ruy Lopez is the best white try to gain advantage. This is because of 2 main reasons:
- It keeps the tension in the center for a longer period of time. If you release the tension (as in for example the Scottish) black does not have to take the various liquidations of the center into account and can choose a optimal play against whites current center.
- Second it is stronger than the Italian game. In both systems the white bishop goes to the a2-g8 diagonal (the weak spot in blacks camp is f7). However in the Ruy Lopez it ends up on b3 (after a6/b5) while in the Italian is goes directly to c4. b3 is a much better square for the white bishop than c4 because it allows white to create a broad center with e4/d4 when white plays d4 in the italian game black can often counter with d5(after exd4) attacking both e4 pawn and bishop on c4. It allows black to liquidate whites strong center. In the Ruy lopez this is not possible because d5 can be answered with e5 (the bischop is not attacked). Giving white a strong attack.
Around here, I've never seen it play so much in my online chess tournaments. Why can't chess players play something different other than transposing into the ruy lopez I understand queens pawns openings/english
openings would be pretty good cause no one actually studies any queen pawn opening or know that type of the queen pawn openings. Trust me I do miss the ruy lopez, but I only did that as a beginner when I was just learning certain openings.