Nimzo Indian Defense Leningrad Variation Discovered Attack in Chess

In the Nimzo-Indian Defense (Leningrad Variation), the “discovered attack” is a tactical motif where a move opens a line—often for a rook or bishop—so a previously blocked piece suddenly attacks something important. A defining feature is the Leningrad setup with …c5 and …Nbd7, creating pressure while allowing a discovered line to appear after a pawn or piece shifts. The discovered attack usually targets the king, a major piece, or a tactical weakness created by the opponent’s piece placement.