Dominoes domino sets commercially available are double six (with 28 tiles) and double nine (with 55 tiles). Larger sets exist and are popular for games involving several players or for players looking for long domino games. The number of tiles in a set has the formula formula_1 for a double-"n" set. The most popular type of play are layout games, which fall into two main categories, blocking games and scoring games. The most basic domino variant is for two players and requires a double-six set. The 28 tiles are shuffled face down and form the "stock" or "boneyard". Each player draws
42 (dominoes) to reach seven "marks" or 250 points. The game consists of a number of hands (a maximum of 13 hands when playing for marks). Before each hand, and based on the seven dominoes drawn by each player, the first person clockwise from the dealer will either pass or bid in order to win the right to choose the trumps and style of play for that hand. Typically, the bidder determines what to bid by estimating how many of the forty-two (42) total points the team will win based on those seven dominoes. The minimum bid is 30. If all players