cool
What chess opening do you play most?

I play only one opening: Reti.
As for defense, I play French against e4, QGD against Queen's Gambit, and Closed Catalan against the Catalan. All other openings I play against in French style
ruy lopez ,reti and catalan as white
open ruy lopez, alekhine, pirc, semi-slav, nimzo-indian as black

1.e4 with various stuff behind as White in casual games, 1.d4 in tournament play.
Nimzo/QID or sometimes Benoni against 1.d4, depending on White's third move.
Alekhine in casual against 1.e4, Caro-Kahn or Sicilian otherwise, depending on my opponent's rating (which is whatever you might think of it a good indication of how probable it is that he is booked up in the Sicilian) ; it depends also a good deal of my mood.

the botvinik system of the english as white
against 1.c4 anglo-indian defense
against 1.d4 Nimzo Indian/Queens indian if my opponet however makes a ramdom move then i play the Blumenfeld gambit
against 1.e4 Sicilian Najdorf
against the Alapin variation of the sicilian i choose 2.g6 where after 3.d4,cxd4,cxd4 i play d5 instantly focusing my energy into attacking my opponets center
I prefer the evan's gambit