[IMG]http://d.yimg.com/a/p/afp/20100422/capt.p***o_1271914793234-1-0.jpg?x=130&y=86&q=85&sig=B9J2M7PW.Ht8aYqJ6QNRGw--[/IMG]AFP - World chess champion Viswanathan Anand will square off against his Bulgarian challenger Veselin Topalov in Sofia Saturday in a marathon final starting a day late due to Europe's volcano crisis.




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