3/9/2023 0 Comments Maxmind accuracyUntil a few years ago, the standard procedure for calculations before the final table was to either use chip EV calculations and ignore any ICM considerations entirely or to setup single-table calculations with artificial prize structures like 80/20 to introduce small bubble factors to the calculation. So the standard ICM chips-to-equity mapping that is used for single-table calculations can't be directly applied to calculations with larger fields. Naive implementations of ICM can handle about 15 players, and even optimized versions can't calculate exact Malmuth-Harville values beyond 25-30 players. The underlying Malmuth-Harville ICM model is extremely inefficient for large player fields. A web calculator featuring this new method is available here and as of February 2020 the latest HRC version includes an updated MTT mode that uses the new model. The deviation of the calculated values to exact Malmuth-Harville ICM is orders of magnitude smaller than in the previous HRC MTT model. We have developed a new algorithm for multi-table tournament (MTT) ICM calculations that provides highly accurate approximations of Malmuth-Harville ICM for field sizes up to thousands of players.
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