Complex sentence: The Chess World Cup 2011 was a chess 128-player single-elimination tournament, played between 26 August and 21 September 2011, in Khanty-Mansiysk, Russia.
Split into simpler sentences: The Chess World Cup 2011 was a chess World Cup tournament. It was a 128-player single-elimination tournament, played between 26 August and 21 September 2011, in Khanty-Mansiysk, Russia.