The Queen’s Gambit Declined Exchange Variation is one of the most important opening systems, having been played by most of the great players in history and from both sides of the board.

The most outstanding specialists in this method of play include Garry Kasparov, Mikhail Botvinnik and Samuel Reshevsky whilst the Black side has been championed by such notables as Anatoly Karpov, Boris Spassky and Paul Keres. It is truly an opening of champions.