The Sinquefield classic event in St Louis ended in a three-way tie. Fabiano Caruana led by half a point going into the last round. He drew with Wesley So. Levon Aronian beat Alexander Grischuk in a crazy "must-win" game. Magnus Carlsen beat Hikaru Nakamura in a 97-mover.
So three players shared victory with 5.5 points from 9 rounds. Shakhriyar Mamedyarov (5) also had a plus score. Viswanathan Anand, Grischuk and Maxime Vachier-Lagrave (all 4.5) scored 50 per cent. The first place was supposed to be decided by playoff but the final decision was to declare the trio co-champions.
A tiebreak was still