Bingo

Bingo is a game of chance played with randomly drawn numbers which players match against numbers that have been pre-printed on 5x5 matrices. The matrices may be printed on paper, 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 for accuracy 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 patterns only require one number to be matched, up to cover-all games which award the jackpot for covering an entire card and certain games award prizes to players for matching no numbers or achieving no pattern. See "Variations" for more details.

Bingo cards

A typical bingo card (showing with yellow dots some of the numbers selected)The most common Bingo cards are flat pieces of cardboard or disposable paper which contain 25 squares arranged in five vertical columns and five horizontal 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(15,4) × P(15,5) × P(15,5) = 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.

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:

O O _ O O
O _ O O O
O O F O _
O O O _ O
_ O O O O

In addition to a straight line, many bingo halls may consider other patterns as a valid bingo, usually 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.

Equipment

The numbers which are called in a game of bingo may be drawn utilizing a number of methods to randomly generating the ball call. With the expansion of computer technology in bingo, electronic random number generators are now common place in most jurisdictions. However, some jurisdictions require mechanical ball draws which may utilize a randomly shuffled deck of bingo calling cards, a mechanical ball blower that mixes ping pong balls with blown air or a cage which is turned to mix small wooden balls. All methods essentially generate a random string of numbers by which players match to their bingo cards.

Culture
A typical bingo dauber or bingo marker, which is commonly used by bingo players at bingo halls across the U.S.Single games often have multiple bingos; for example, the players first plays for a single line; after that, play goes on until a full card is called; then, play continues for a consolation full card.

Players often play multiple cards for each game; 30 is not an unusual number. Because of the large numbers of cards played by each player, most halls have the players sit at tables to which they often fasten their cards with adhesive tape. To mark cards faster the players usually use special markers called daubers. At commercial halls, after calling the number the caller then displays the next number on a television monitor; bingo cannot be called until that number is called aloud, however.

Bingo is often used as an instructional tool in American schools and in teaching English as a foreign language in many countries. Typically, the numbers are replaced with beginning reader words, pictures, or unsolved math problems.

Terminology

Ready/Waiting/Cased/Set/Chance ? When someone only needs one number in order to complete the Bingo pattern, he/she is considered to be Ready, Waiting, Cased, Set or 'has a chance'.

Breaking the Bubble ? The bubble is the minimum number of balls required to complete the Bingo pattern. This is the earliest point anyone could have a valid bingo. Example: Winning pattern is 1 hard way bingo, a straight line without the free space. The minimum number of called numbers is 5 although it is not considered Breaking the Bubble until 1 number in each column or 5 numbers in a single column have been called.

Jumping the Gun ? One who calls bingo before having a valid bingo. The most common situation is someone calling bingo using the next number in the screen before it has been called.

Wild numbers ? Many bingo halls will have certain games with a wild number. Wild numbers allow bingo players to start with multiple called numbers. Typically the first ball drawn is the determining factor.

Standard ? All numbers ending with the second digit of the first number. Example: First ball is 22. All numbers ending in a 2 including B2 is considered a called number.

Forwards/backwards ? All numbers beginning or ending with the wild number. Example: First ball is 22. All numbers beginning or ending with a 2 is considered a called number. If the first ball ends with an 8, 9 or 0, another number may be drawn as there are no numbers starting with a 8 or 9 and only 9 numbers starting with a zero. Some halls will also redraw a number ending with a 7 as there are only six numbers beginning with a 7.

False Alarm - Term used when one calls bingo but is mistaken. This could be because of mishearing the caller or stamping the wrong number by mistake. If one calls a falsie, they genuinely believe they have a bingo. Also known as a social error. Another term used for this is a bongo.

Crying Number(s) - Once a valid bingo has been claimed and the game is officially closed, the numbers that would have been drawn next are known as the crying numbers due to fact that any person who needed the next number would be crying.

Hard Way Bingo - A hard-way bingo is a bingo pattern in a straight line without the use of the free space