Keywords: Go term

互先, 互い先 (tagai-sen, literally 'alternate first') is a Japanese go term describing conditions of play in which neither player takes a handicap.

1) In a series of tagai-sen games the players would alternate in playing the black stones. Usually, after one player achieved a lead of 4 wins over the other, or some other threshold, the handicap shifted to sen-ai-sen. A game which if lost would result in a shift in the handicap is called a kadoban. For more information on professional handicaps in the days before komi go, see Match Handicap System.

2) After komi was generally introduced, games with standard komi (that is, no handicap) also came to be called tagai-sen.

Tagai-sen last edited by hnishy on July 20, 2018 - 03:12
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