Anand is World Champion! Viswanathan Anand of India convincingly won the world championship in Mexico City. His undefeated score of 9-5 in the double round robin made him the 15th world champion in the series that began in 1886. Anand, 37, has been ranked among the top three in the world for more than a decade. He ascended to the top spot on the ratings list in April and now has the title to confirm his superiority. Boris Gelfand of Israel and former champion Vladimir Kramnik of Russia tied for second place at 8-6. Kramnik never seemed close to catching Anand, but two late wins moved him ahead of the pack. Others: Peter Leko (Hungary), 7-7; Peter Svidler (Russia), 6 1/2 -7 1/2 ; Levon Aronian (Armenia) and Alexander Morozevich (Russia), 6-8; and Alexander Grischuk (Russia), 5 1/2 -8 1/2 .