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11.5.5.7 Beyond the simple model

Janowski has developed two other models for cubeful equities. The first is a generalization of the one used by GNU Backgammon; it introduces two cube efficiencies instead of one. Often you may see that the cube efficiencies are different for the two players, and the refined general model as it is named by Janowski, tries to take this into consideration by using different cube efficiency parameters for the two players. For example, the blitzer may have another cube efficiency that the blitzee.

The second model is not published, but redefines the cube efficiency into a value that can be understood more intuitively and calculate easily from rollouts.