How they work
An automatic table hides a mechanism under its surface. At the end of a hand, players push the tiles into an opening in the centre; inside, the tiles are mixed and turned face down using magnets embedded in each tile, then stacked into four walls that rise up to the table surface. Most tables use two sets of tiles in different back colours, so one set is shuffled while the other is in play.
Many tables also roll the dice electronically and display scores on built-in screens.
Where you will find them
Automatic tables became common in Japanese mahjong parlours from the late twentieth century, and they are now standard in parlours and many homes across East Asia. In mainland China they are widely sold for home use. They are less common in Western clubs because of their cost, weight and the fact that American play needs 152 tiles.
Effects on the game
Mechanical shuffling removes stacking mistakes and makes deliberate cheating far harder. It also speeds the game up considerably, which suits professional leagues, time-limited parlour sessions and online-style play.
Some players miss the ritual of washing tiles and building walls. Others value the extra time for play and conversation.
Buying one
Automatic tables are heavy, require electricity and maintenance, and use specific tile sizes. Buyers should check that replacement tiles are available, that the table supports the style they play, and that it fits through the door. For most casual players, a good manual set remains the practical choice.
