 Complete the following phrase:  The format was changed for the FIDE Grand Prix 2017 with 24 players taking part in the cycle. Four events took place with 18 players in competing in each nine-round Swiss tournament. The events were originally announced to take place on Oct. 12 to 23, 2016; Feb. 10 to 21, 2017; May 11 to 22, 2017; and July 5 to 16, 2017. On May 26, 2016, Agon CEO Ilya Merenzon hoped to announce the venues within the next two weeks. After the FIDE meetings at the 42nd Chess Olympiad in Baku in early September 2016, Peter Doggers of Chess.com reported that the Grand Prix has been postponed until 2017. Shakhriyar Mamedyarov and Alexander Grischuk qualified to the 