<prompt> Kalima dǝye dǝga tamotǝyin: Kasimdzhanov dǝ shima kam kǝn indimi dǝwo kam World Champion Viswanathan Ad dǝga, shi dǝga cidazǝna Ad-a kǝla kǝla-a loktu kǝnasartǝnzǝ kǝla kazadala World Chess Championship ye dǝn suro October 2008 lan Vladimir Kramnik-a, April-May 2010 lan Veselin Topalov-a kuru suro  <response>: May 2012 kǝla Boris Gelfand yen. 