Re: [Bug-gnubg] miscellaneous bugs and suggestions

[Robert-Jan Veldhuizen]

At 20:55 9/5/2002 +0000, you wrote:

> On Thu, Sep 05, 2002 at 04:18:20AM +0200, Robert-Jan Veldhuizen wrote
>
> > - how about extending "rollout cube decision" so that one can also just
> > check the double decision (only upper rollout)
>
> The double decision requires both rollouts as well as the equity for
> "double, pass".

You're right that often you need both values (and double,pass is just +1 
EMG of course), but not always:

If it's a take, yes. But there's also doubling decisions where the pass 
might be trivial (double/take equity >> 1), and the only question is 
whether it's too good (no double eq > 1) or double/pass; then you're only 
interested in the upper row of a cube decision rollout.

A bit similar to the scenario where the double is clear and you're only 
interested in the take decision, and you only need the bottom row a cube 
decision rollout.

Seems like an interesting option to me, since it can speed up such a 
rollout by quite a lot I think. Especially when a position is close to "too 
good", rolling out the sceanrio with opponent owning the cube could mean a 
long game (recubes/passes seem unlikely here), and the result is often not 
so interesting since it's clear that it's a big drop.

--
Robert-Jan (Zorba on FIBS)