correspondence chess

Correspondence chess, sometimes also called turn-based chess, is played between players at geographically different locations. The main difference between over-the-board or "live" chess games and correspondence chess is the time scale: in correspondence chess, players usually have several days and sometimes even weeks to make one single move. Traditionally, the moves were communicated by mail. Today, most correspondence chess games are played using e-mail or correspondence chess web servers.

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