Pushed back on the defensive third time in as many games as white, Anand fumbled, probably this might be the costliest fumble for him ever, as he allowed Carlsen to get a pawn plus rook endgame.

Theoretically the position was still drawn, but then that was the case in the previous game of the match too. Yet again, Carlsen provoked Anand to do something to solve matters quickly and the defending champion realized how hard it is to achieve it against the 'Mozart of chess'.

The endgame was drawn till move 56 according to the experts of the game. Then Anand made one mistake after another and it was all over 11 moves later.

http://timesofindia.indiatimes.com/sports/chess/World-Chess-Championship-Carlsen-beats-Anand-in-Game -6-to-take-4-2-lead/articleshow/25899775.cms