A domino is a small rectangular wood or plastic block with either a blank surface or one marked by dots resembling those on dice. When a domino is knocked over, it triggers a chain reaction that causes other dominoes to topple over in turn. The resulting domino chains can be very long, forming straight lines or curved patterns that are used for art and to make 3D structures like towers. Dominoes can also be used to create puzzles that require the use of logic and spatial skills.
A game of domino requires at least two players and a set of 28 tiles, which are shuffled and then become the “stock” from which each player draws his or her seven dominoes. The stock is arranged so that the players can see their own tiles but not those of their opponents. If a player draws a domino that he or she is not permitted to play, it must be returned to the stock and reshuffled before another player takes it from the stock.
The basic rules for most domino games involve players drawing a certain number of dominoes from the stock and then placing them in their hands, depending on the rules of the particular game. The players then make their first plays. Typically, the first domino played must match a tile that is already on the table and have one of its matching ends touching it. This configuration is known as the line of play and is referred to by different names in different games.
When playing a game of domino, it is important to remember that the open end of the last tile played must face up. This is important because a domino is only able to fall off the table when it is facing up, so it is important not to knock a domino off of its side while making a play.
It is not unusual for dominoes to be placed in a line that extends out past the edge of the table. This type of arrangement is known as a snake-line because of the shape that it assumes as it develops.
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The most common use of the word domino is to refer to a game played with a set of small blocks called dominoes. The game’s name comes from the fact that when the first domino is tipped over, it triggers a sequence of events that results in other dominoes to tip over, and so on. The effect is a bit like the ripples caused by a pebble dropped into a still lake. Dominoes are also sometimes used to create art on the floor of a room or in other ways to decorate a space.