Classical Nimzo-Indian ? 4.Qc2 The Nimzo-Indian is not only one of the most solid openings against 1.d4, but it also suits the player with Black who is aiming from the start for the full point. In many treatments of the opening, White runs slight risks ? doubled pawns and an isolated queen pawn are typical. At the peak of world chess, there is thus a clear preference for the Classical System 4.Qc2 ? in which White usually retains the bishop pair and the pawn structure remains intact; however on some occasions it is necessary to make up for being behind in development.