Any opening starting with 1. d4 d5 in which white does not continue with c4 within the next few moves.
ECHESSPEDIA
Quotes of the Day
We must finish once and for all with the neutrality of chess. We must condemn once and for all the formula “chess for the sake of chess”, like the formula “art for art’s sake”. We must organize shock brigades of chess-players, and begin immediate realization of a Five-Year Plan for chess.
Nikolai Vasilyevich Krylenko
I don’t believe that Garry likes making decisions by democratic procedures. When there is a decision that he doesn’t like, he just turns against this organization.
Georgios Makropoulos 2013
I spend hours playing chess because I find it so much fun. The day it stops being fun is the day I give up.
Magnus Carlsen
Carlsen is paying far less attention to opening theory than his rivals, he is happy to go down paths that may offer no advantage yet have the benefit of dragging opponents out of their “openings book”. Once beyond the reaches of computer-aided openings, Carlsen starts to turn the screw.
Judith Polgar FT, 2014
Man has no chance to win against the modern computer. And, by and large, a confrontation between two individuals is more interesting.
Vladimir Kramnik 2015