In the fourth round of the Pearl Spring Chess tournament at Nanjing in China today, World Champion Viswanathan Anand suffered a shock defeat at the hands of Etienne Bacrot of France. Just when he was sitting pretty with a black-piece win against arch-rival Veselin Topalov of Bulgaria, Anand was in for the biggest surprise of this season. Bacrot played energetically to catch the Indian ace off guard and scored one of the biggest wins of his career. With six rounds to come in this six-player double round robin tournament, Anand now stands sole third on two points. Magnus Carlsen of Norway leads with three points, after playing out a draw with Vugar Gashimov of Azerbaijan. Bacrot follows in the second place with two and a half points.