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Bingo is a game of chance played with different randomly drawn numbers which players match against numbers that have been pre-printed on 5×5 cards.The cards may be printed on paper or card stock, or electronically represented, and are referred to as cards. Many versions conclude the game when the first person achieves a specified pattern from the drawn numbers. The winner is usually required to call out the word "Bingo!", which alerts the other players and caller of a possible win. All wins are checked to make sure the person has not made a mistake before the win is officially confirmed at which time the prize is secured and a new game is begun. In this version of bingo, players compete against one another for the prize or jackpot. Alternative methods of play try to increase participation by creating excitement. Since its invention in 1929, modern bingo has evolved into multiple variations, with each jurisdiction's gambling laws regulating how the game is played. There are also nearly unlimited patterns that may be specified for play. Some games require only one number to be matched, while cover-all games award the jackpot for covering an entire card. There are even games that award prizes to players for matching no numbers or achieving no pattern. See "Variations" for more details. ==Bingo cards== The most common Bingo cards are flat pieces of cardboard or disposable paper which contain 25 squares arranged in five vertical columns and five side to side rows. Each space in the grid contains a number. A typical Bingo game utilizes the numbers 1 through 75. The five columns of the card are labeled 'B', 'I', 'N', 'G', and 'O' from left to right. The center space is usually marked "Free" or "Free Space", and is considered automatically filled. The range of printed numbers that can appear on the card is normally restricted by column, with the 'B' column only containing numbers between 1 and 15 inclusive, the 'I' column containing only 16 through 30, 'N' containing 31 through 45, 'G' containing 46 through 60, and 'O' containing 61 through 75. The number of all possible Bingo cards with these standard features is P(15,5) × P(15,5) × P(15,5) × P(15,5) × P(15,4) = 552,446,474,061,128,648,601,600,000 or approximately 5.52×1026. In U-Pick 'Em bingo and other variants of bingo, players are issued three 25 number cards which contain all 75 numbers that may be drawn. Players then mark which numbers they wish to play and then daub those numbers according to the numbers drawn. In addition, double-action cards have two numbers in each square. A player wins by completing a row, column, or diagonal. The most chips one can place on a Bingo board without having a Bingo is 19, not counting the free space. In order for this to happen, only one empty cell can reside in each row and each column, and at least one empty cell must be in each diagonal, for instance: B I N G OIn addition to a straight line, other patterns may be considered a valid bingo in special games. For example, in the illustration above, the 2x2 square of marked squares in the upper-right-hand corner would be considered a "postage stamp". Another common special game requires players to cover the four corners. There are several other patterns, such as a Roving 'L', which requires players to cover all B's and top or bottom row or all O's and top or bottom row. Another common pattern is a blackout, covering all 24 numbers and the free space. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Bingo (U.S.)」の詳細全文を読む スポンサード リンク
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