Defending champion Viswanathan Anand will have to fight it out in Rapid chess tiebreaker against challenger Boris Gelfand after a tied 6-6 result in the World Chess Championship match in Moscow tomorrow. To start with, there will be four games under rapid chess rules with 25 minutes to each player and a ten secondsincrement after every move is made.In case of a 2-2 result, the two will play two blitz mgames with five minutes each with a three seconds increment. There will be five such matches if the tie persists and finally an Armageddon game will be played with five minutes towhite and four to black and white will be forced to win shouldthis arise. The tie-breaker is likely to see a high-tension dramawhich has been so far amiss from this world championship,which produced just two decisive games apart from ten draws. Playing his third match since winning the world title ina tournament format in 2007, this has been the least absorbingcontest in world championship matches for Anand. In 2008, the Indian ace had won three out of fourdecisive games against Russian Vladimir Kramnik while in 2010against Veselin Topalov of Bulgaria, Anand had won three outof five decisive games to stake his claim for the world title.