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speed chess

  1. a game of chess played in a very short amount of time, usually five minutes per player for an entire game.
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Also called blitz chess, lightning chess.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for lightning chess

lightning chess

noun
  1. rapid chess in which either each move has a fixed time allowed (usually 10 seconds) or each player is allotted a fixed time (often 5 minutes) for all his movesUS name: rapid transit chess
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speed chess

noun
  1. a form of chess in which each player's game is limited to a total stipulated time, usually half an hour; the first player to exceed the time limit loses
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012