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
Crud (game) the latter, when available) using the cue ball (the "shooter ball"), and one "object ball" (most commonly a striped ball since it is easiest to determine if it is in motion). Only the corner pockets are used on non-snooker or smaller tables. On these, the side pockets (if there are any) are blocked off, traditionally by rolls of toilet paper. Pool cues are not used; the shooter ball is launched across the table surface with the hand. A game of crud involves moving around the table and other players, trying to grab the shooter ball and either strike the object