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Further, it is assumed that any handicap stones, komi other than even, etc. can be accounted for by subtracting 1 from the rank of the white player for every handicap stone and adding some amount for every point of komi away from even.
Once we have this relationship, we can take any take any player A, and find the probability that the games they played would have the outcome that they actually did have. This is done by multplying together the win probabilty for every game they played. Now, we can treat RankA as a variable, come up with a graph of probability of all game results (prob) vs. RankA, and solve to find the rank for A that maximizes prob. This will be the rank assigned to A. �
As we can see, there are many differences in ranks of igo, and actually the rank calculations are different for situation to situation, the japanese rank system is different than IGS rank system. But letís not forget the the aim is having better games, no matter of what rank, and we keep the rank comparisons for ..entertainment, a couriosity.
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