were formed. The Billiards Association (formed 1885) and the Billiards Control Club (formed 1908) merged to form the Billiards Association and Control Club (BA&CC) and a new, standardised set of rules for snooker was first established in 1919. The possibility of a drawn game was abolished by the use of a as a tiebreaker. These rules are similar to the ones used today, although rules for a minimal point penalty was imposed later. Played in 1926 and 1927, the first World Snooker Championship—then known as the Professional Championship of Snooker—was won by Joe Davis. A Women's Professional Snooker Championship (now the World Women's Snooker Championship) was created in 1934 for top female players. As a professional English billiards and snooker player himself, Davis raised the game from a recreational pastime to a professional sporting activity. Davis won all fifteen tournaments held until 1946, when he retired from the championships. However, snooker declined in popularity in the post-war era; the 1952 World Snooker Championship was contested by only two players and was replaced by the World Professional Match-play Championship, which was also discontinued in 1957. In an effort to boost popularity of snooker, Davis introduced a variation known as "snooker plus" in 1959, which added two extra colours, but this version of the game was short-lived. A world championship for top amateur players, now known as the IBSF World Snooker Championship, was founded in 1963, and the official world championship was revived on a challenge basis in 1964. The BBC first launched its colour television service in July 1967. In 1969, David Attenborough, then the controller of BBC2, commissioned the snooker tournament television series Pot Black, primarily to showcase the potential of the BBC's new colour television service, as the green table and multi-coloured balls provided an ideal opportunity to demonstrate the advantages of the new broadcasting technology. The series became a ratings success and was, for a time, the second-most popular show on BBC2 behind Morecambe and Wise. In the same year, the 1969 World Snooker Championship reverted to a knockout tournament format, with eight players competing. Due to these developments, the year 1969 is taken to mark the beginning of snooker's modern era. The World Snooker Championship moved in 1977 to the Crucible Theatre in Sheffield, where it has been staged ever since, and the 1978 World Snooker Championship was the first to receive daily television coverage. Snooker quickly