Snooker (pronounced , ) is a cue sport played on a rectangular table covered with a green cloth called baize, with six pockets, one at each corner and one in the middle of each long side. First played by British Army officers stationed in India in the second half of the 19th century, the game is played with twenty-two balls, comprising a white , fifteen red balls, and six other balls—a yellow, green, brown, blue, pink, and black—collectively called the colours. Using a cue stick, the individual players or teams take turns to strike the to other balls in a predefined sequence, accumulating points for each successful pot and for each time the opposing player or team commits a . An individual of snooker is won by the player who has scored the most points. A snooker ends when a player reaches a predetermined number of frames. Snooker gained its identity in 1875 when army officer Sir Neville Chamberlain, stationed in Ootacamund, Madras, and Jabalpur, devised a set of rules that combined black pool and pyramids. The word snooker was a well-established derogatory term used to describe inexperienced or first-year military personnel. In the early 20th century, snooker was predominantly played in the United Kingdom where it was considered a "gentleman's sport" until the early 1960s, before growing in popularity as a national pastime and eventually spreading overseas. The standard rules of the game were first established in 1919 when the Billiards Association and Control Club was formed. As a professional sport, snooker is now governed by the World Professional Billiards and Snooker Association. The World Snooker Championship first took place in 1927. Joe Davis, a key figure and pioneer in the early growth of the sport, won fifteen successive world championships between 1927 and 1946. The "modern era" of snooker began in 1969 after the broadcaster BBC commissioned the television series Pot Black, later airing daily coverage of the World Championship, which was first televised in 1978. Key figures in the game were Ray Reardon in the 1970s, Steve Davis in the 1980s, and Stephen Hendry in the 1990s, each winning the World Championship at least six times. Since 2000, Ronnie O'Sullivan has won the most world titles. Top professional players compete in regular tournaments around the world, earning millions of pounds on the World Snooker Tour, a circuit of international events featuring competitors of many different nationalities. The