<prompt> Pedzisa mutsara unotevera: Muna 2011, akafananidza nzvimbo yekutanga naNikita Vitiugov naLê Quang Liêm muAeroflot Open, achiisa yechitatu pa tiebreak. Akanga ari mumwe wevaviri kuna Boris Gelfand nokuda kwe  <response>: World Chess Championship 2012. 