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Byo Yomi
Keywords: Go term
NOTE: This web page describes the Canadian byo-yomi system, which is used on the IGS and NNGS go servers, but is fairly rare in use outside of these servers. Much more common is the standard "Japanese" byo-yomi system, which is completely different.
Byo-yomi refers to an extension of playing time which is added to the basic playing time of a match. It can be translated into english with the term 'overtime'. A byo-yomi period has two main properties: the time and the stones to play. The byo-yomi time starts to run as soon as the main time runs out. The player is said to be "in byo-yomi". He must then play all his byo-yomi stones before the byo-yomi time runs out (Say, 25 stones within 5 minutes, an average of 1 stone every 12 seconds). If the player succeeds, a new byo-yomi period starts, and he gets another set of byo-yomi stones to play. Only if he does not manage to play all his byo-yomi stones within a byo-yomi period does he lose on time. On the Go servers, it is common to have a very short main time (1 minute, say) followed by a relatively short byo-yomi, 5 minutes, say. "Anyone for a 1/5 game?". This leads to a game with a brisk and steady pace (or a manic pace, depending on your point of view). A 200 move game played as 1/5 with 25 byo-yomi stones will never last more than 42 minutes. This is a copy of the living page "Byo Yomi" at Sensei's Library. (C) the Authors, published under the OpenContent License V1.0. |