Ruy Lopez, Exchange Variation grandmaster play by Emanuel Lasker, and later invigorated with new ideas by Bobby Fischer. The Exchange Variation can be a powerful psychological weapon. Black is forced to play actively, which is psychologically difficult if all one needs is a draw. Lasker's famous win against Jose Raul Capablanca in the St. Petersburg 1914 chess tournament is an example of this. With a lead in the tournament, Capablanca was intent on simplifying the game to obtain a draw, but faced with the Exchange Ruy he played too passively and was routed by Lasker as a result. 4...dxc6 is the main recapture. Black's
Harold Lopez Nussa Harold Lopez Nussa Harold López-Nussa Torres is a Cuban jazz pianist. He lives in Havana's Vedado neighborhood in Cuba and has French ancestry on his grandmother's side. López-Nussa gave a concert in the 2006 Montreux Jazz Festival and recorded with Claude Nobs support, "Sobre el Atelier" in a Swiss studio. López-Nussa was born into a musical family in Havana on July 13, 1983. His father, Ruy López-Nussa Lekszycki, and his younger brother Ruy Adrián López-Nussa are drummers and percussionist. His uncle Ernán López-Nussa is a wellknown jazz pianist. His mother, Mayra Torres, was a piano teacher. He started on piano