MOSCOW, December 1. /TASS/. Norway's Magnus Carlsen has won over Russia's Sergey Karjakin in tie-break and retained his World Champion title. Carlsen emerged victorious after four tie-break games defeating Karjakin 9-7
Karjakin lost in the third and fourth tie-break games.
Their overall score after 12 games played was tied at 6-6 and both Grandmasters played a series of tie-break games to determine the new world champion. In line with the official FIDE (World Chess Federation) regulations, the tie-break stage begins with four rapid games, which are played with 25 minutes granted for each player per game and 10 seconds added after each move.