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BGonline.org Forums
Do I misunderstand gammon price?
Posted By: Daniel Murphy In Response To: Do I misunderstand gammon price? (poseidon)
Date: Friday, 6 January 2012, at 10:44 p.m.
"With the added caveat that the cubeless outcomes aren't all played out to the end; they include evaluations by the bot at the point of double/pass."
Are you sure abut that?
Yes. If you're doing a cubeful rollout, when the cube is given and passed, the trial ends, and the bot estimates how often each side would win/lose a game/gammmon/backgammon if the trial were continued to the end of a cubeless game.
Acccording to Timothy's post: "However, they're not really cubeless wins/gammons/backgammons, because the presence of the cube affects the checker play"
That's true, but that's a different problem -- we call the breakdown reported in a cubeful rollout cubeless (or pseudocubeless or "cubeless" or whatever) even though the breakdown is necessarily the same breakdown that would happen in a a game that was actually played with no cube. The reason is for that possible difference is that if you never had to make play choices with consideration for upcoming cube decisions, you might make different plays.
If they include evaluations a the D/P point then they are cubeful, right?
No, I'd look at like this: when the cube is dropped, the trial ends, an evaluation is made, and the evaluation estimates how the game would be likely to end if the cube had not been given. Since the game breakdown is an estimate of how the game would end if there were never any cube action, the fact that a cube is given and dropped doesn't make the game breakdown "cubeful." In fact, in a cubeful rollout, when the cube is dropped, that gets scored as a single win, cubefully. And that double/drop -> single win action is reflected in the cubeful equity that the bot reports, but not in the "cubeless" game breakdown or, of course, in the "cubeless" equity.
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