 Complete the following phrase:  The Masters was first held in 1975 and is part of the Triple Crown events of the game of snooker alongside the World Snooker Championship and the UK Championship; it does not have official ranking status. The 2005 tournament, held between 13 and 20 February at the Wembley Conference Centre in London, was the sixth of nine World Professional Billiards and Snooker Association WPBSA main tour events of the a hrefSnooker20season202004200520042005 seasona, following the 