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 balls from going in that pocket, requiring that some be moved out of the pocket manually before shooting again. Regardless of table size, the WPA standard (sometimes informally called "American-style") table has wide, angular pockets that funnel notably inward, generally 1.75 to 2.25 times as wide at the opening as the diameter of the balls, wider at the side (middle) pockets than the corners. WEPF pool (sometimes informally called "British-style" or "Commonwealth-style") is played with balls, and this type of table has smaller, narrow pockets (the width is calculated as the ball diameter multiplied by 1.6, and is consistent at