Five-time world champion Viswanathan Anand survived a scare before eventually holding his position together to escape with a draw against Dutch Grandmaster Anish Giri in the sixth round of London Chess Classic here. Trying to invade early into Giri’s position, Anand found that the former was adequately prepared and while it was an extremely wild game the chances were only for Giri in complexities. Wesley So of United States cemented his position at the top of the table by handing Veselin Topalov of Bulgaria. The Filipino turned American Grandmaster took his tally to an enviable 4.5 points out of a possible six and now remains a half point clear of compatriot Fabiano Caruana. Caruana defeated Hikaru Nakamura, also of United States, to remain within striking distance of Wesley So. This was another adrenaline rush for the players as well as spectators and Caruana justified why he is world number two and bridging the gap between him and world champion Magnus Carlsen of Norway.