Here is an interesting win in an early round of the Renova Grand Prix in Switzerland. It is Fabiano Caruana, of Italy and the US, vs. Teimour Radjabov, of Azerbaijan. At move six of this Schliemann variation of the Ruy Lopez, Radjabov voluntarily gave up a pawn. We might compare this move to the tale of biblical original sin. Radjabov accepted the risks of his decision, but never managed to recover, despite his creation of substantial complications.