Compensation for Last Stone

   

PlatinumDragon: I bring my analysis from: Territory and Area Scoring

Chinese Rule (Actually all Area)

  • 1 handicap = komi = 7 moku
  • 2 handicap = 2 stone - 1 = 14 moku
  • 3 handicap = 3 stone - 2 = 21 moku
  • 1 stone = 8 moku, except first stone = 7 moku

Japanese Rule (Actually all Territory)

  • 1 handicap = komi = 6 moku
  • 2 handicap = 2 stone = 12 moku
  • 3 handicap = 3 stone = 18 moku
  • 1 stone = 6 moku

Playing Last Stone

  • If Black Plays Last Stone, then Black gains 1 moku
  • If White Plays Last Stone, then White gains 2 moku
  • Japanese/AGA Komi = 6.5 if black plays last and Komi = 7.5 (one point from forcing black to pass one more time) if white plays last
  • Chinese Komi = 7.5 if black plays last and Komi = 8.5 (one point from forcing black to pass one more time) if white plays last
  • Forcing a pass is worth 1 point, and so white gains 2 point for last move (playing the last stone) instead of 1.
    • Does not really affect territory scoring as much as it is not as noticable.
    • This is more noticeable in AGA rules, which says that it gives the same result as Japanese rule.
      • AGA uses either Area or Territory Scoring, but compensates to give the same result.

Therefore, Komi cannot be a constant because the value of last move is not constant, or we need a separate value for Last Stone Compensation. So Komi is the First Stone compensation, but what will be the Last Stone Compensation?


This is a copy of the living page "Compensation for Last Stone" at Sensei's Library.
(OC) 2009 the Authors, published under the OpenContent License V1.0.
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