
BGonline.org Forums
this should be easy..  ROLLOUT
Posted By: Tom Keith
Date: Sunday, 29 June 2014, at 12:58 p.m.
In Response To: this should be easy..  ROLLOUT (Timothy Chow)
By "these numbers" I mean a value vector for the current match situation. The value vector is the relative values of winning/losing a gammon or backgammon compared to winning/losing a single game. It is easy to compute a value vector when the cube is dead. Not so easy when the cube is alive because, for each possible result (win/lose single game, gammon, backgammon), you have to estimate the probability distribution of final cube values in order to calculate the average value of that result.
A "cubeless rollout," by my definition, is a rollout that plays according to a value vector. There is no cube in play. The same value vector is used for the entire (remainder) of the game.

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