Kings Indian Defense Petrosian Variation Discovered Attack in Chess

In the Kings Indian Defense Petrosian Variation, Black often plays ...c5 and ...d5 to challenge the center while keeping pieces poised for tactics. A “discovered attack” here usually happens when a pawn move or piece shift opens a line (commonly for a rook or bishop) to attack a target that was previously shielded. The defining feature is that the tactical blow is enabled by a move that simultaneously creates the line and changes what the attacking piece can see.