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'''Blitz chess''' is high-speed [[chess]] that allots only 5 minutes or so per side.  The world championship in blitz chess allows only 3 minutes per side but 2 extra seconds per move.

'''Blitz chess''' is high-speed [[chess]] that allots only 5 minutes or so per side.  The world championship in blitz chess allows only 3 minutes per side but 2 extra seconds per move.

It is common for a player to win blitz chess when his opponent runs out of time. This happened to world champion Magnus Carlsen at the Sinquefield Cup in 2019 where blitz chess is used as a playoff if classical chess and rapid chess fail to produce a clear winner.

It is common for a player to win blitz chess when his opponent runs out of time (flagging). This happened to world champion Magnus Carlsen at the Sinquefield Cup in 2019 where blitz chess is used as a playoff if classical chess and rapid chess fail to produce a clear winner.

Players who excel at blitz chess are not necessarily the same who prevail at the slower, classical chess. However, mastering classical chess is considered essential prior to excelling at blitz chess.  

Players who excel at blitz chess are not necessarily the same who prevail at the slower, classical chess. However, mastering classical chess is considered essential prior to excelling at blitz chess.