White exchanges bishop for knight, damaging Black's pawn structure.
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 - See Ruy Lopez.
4.Bxc6 - The Exchange. White gives up the bishop pair for structural advantages.
White's plans: Target the doubled c-pawns. Play d4 and control the center.
Black's plans: Use the bishop pair in open play. Repair the pawn structure with ...dxc6.
Watch the moves to understand the opening sequence. Use the controls to replay or auto-play the variation.