Magnus Carlsen beat five times world chess champion Vishwanathan Anand in the sixth round in the sixth game in Chennai today. Though Anand had the advantage of making the first move in game, Carlsen's briliant moves challenged Anand and he accepted his defeat in the 67th move. Now Carlsen has scored four points against Anand's two points in the six games. Six more matches are remaining in a round in the total twelve games.