Alexandr Hilário Takeda Sakai dos Santos Fier is a Brazilian chess grandmaster. He competed in the FIDE World Cup in 2009, 2011, 2013, 2015, 2017 and 2023.

The Chess World Cup 2009 was a 128-player single-elimination tournament, played between 20 November and 14 December 2009, in Khanty-Mansiysk, Russia. The Cup winner qualified for the Candidates stage of the World Chess Championship 2012. Boris Gelfand defeated Ruslan Ponomariov in the final.