Indoor games and sports is captured and removed from the board. The object of the game is to trap (checkmate) the enemy king by putting it in a position where it cannot escape capture. Various indoor games, including billiards, snooker and pool, are played on a large, flat, cloth-covered table with six pockets. In these games, each of the two players tries to pot the balls (knock them into the pockets) by striking them with a cue-ball, which is hit with the tip of a stick called a cue. In "billiards", there are just three balls: a white cue-ball for each player and one
Billiard table less than thick. The flatness of the table must be divergent by no greater than lengthwise and across the width. A table designed for the games snooker and English billiards is usually called a snooker table today, though English billiards pre-dates snooker. The playing area of a tournament snooker table, as standardized by the World Professional Billiards and Snooker Association (WPBSA or World Snooker) and the amateur International Billiards and Snooker Federation (IBSF) which uses WPBSA rules, measures 11 feet 8.5 inches by 5 ft 10 in (356.9 cm by 177.8 cm) with a tolerance of ± 0.5 in (13