High Quality Content by WIKIPEDIA articles! The 2011 World Billiards Championship, the top international competition in English billiards, was held at the Northern Snooker Centre in Leeds, England, between 24 and 31 October 2011. The 34 players were divided six groups of four and two of five in first group stage, with the top two in each group advancing into the second group stage. The 16 players in the second group stage were divided into four groups of 4, with the top 2 reaching the knock-out round.