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Re: [Bug-gnubg] Recent RGB posting on "Change Dice" Option
From: |
Joern Thyssen |
Subject: |
Re: [Bug-gnubg] Recent RGB posting on "Change Dice" Option |
Date: |
Thu, 5 Dec 2002 12:07:55 +0000 |
User-agent: |
Mutt/1.4i |
On Thu, Dec 05, 2002 at 09:54:04AM -0000, Ian Shaw wrote
> > From: Joern Thyssen [mailto:address@hidden
> >
> > hmmm, 20 minutes later:
> >
> > I'm sorry: I couldn't resist :-) I've implemented the roll joker/roll
> > anti-joker part (except for the opening roll)... If someone
> > thinks this
> > is juuuuust toooo much let me know, and I'll remove it again :-)
> >
> > Try it with the command "set cheat on".
> >
> Ouch! That is brutal! Did you really have to make it roll jokers for
> both sides?
Yup! You can imagine quite few variations of the cheat mode: roll jokers
for both sides, roll anti-jkokers for both sides, roll jokers for human
and anti-jokers for bot just to name a few. Also roll jokers in, say, 25%
percent of all rolls.
Some of these a quite interesting: for example jokers or anti-jokers for
both sides.
> I actually found it quite instructive with regard to
> making the most of great rolls, and for making aggressive early
> doubles.
>
> A couple of curiosities...
>
> Here, the game ends up as a stalemate. The program repeatedly rolls 66 for
> both sides.
> GNU Backgammon Position ID: tr0bAADnAADgXw
> Match ID : UQkAADADAAAA
> +24-23-22-21-20-19------18-17-16-15-14-13-+ O: GnuBg
> | X O O O O O | | O | 51 points
> | X O O O O O | | O |
> | X O O | | |
> | X O | | |
> | 8 | | |
> | |BAR| |v
> | | | |
> | | | |
> | X X | | |
> | X X | | | On roll
> | X X | X | | 0 points
> +-1--2--3--4--5--6-------7--8--9-10-11-12-+ X: Ian (Cube: 2)
The joker-analysis is performed on 0-ply, and 0-ply is probably not
seeing any difference between the rolls.
>
> Sometimes it's better to dance...
>
> GNU Backgammon Position ID: 2nYXAAHnAADgbw
> Match ID : UQkHADADAAAA
> +24-23-22-21-20-19------18-17-16-15-14-13-+ O: GnuBg
> | X O O O O O | | O O | 51 points
> | X O O O O | | O |
> | X O | | O |
> | X | | |
> | 7 | | |
> | |BAR| |v
> | | | |
> | | | |
> | X X | | |
> | X X | X | | Rolled 61
> | X X O | X | | 0 points
> +-1--2--3--4--5--6-------7--8--9-10-11-12-+ X: Ian (Cube: 2)
>
> Cheat mode prefers you to enter 1 chequer from the bar in these
> situations, just leaving 1 up. I'm not sure why. Perhaps it's the
> opportunity for X to crunch further, but then you'd have thought a 21
> would be better.
If you roll 21 you'll hit, which is a quite good roll. It's probably
worse to enter one chequer at time on the ace point, and then crunch the
three point. But again, the analysis is performed on 0-ply so I don't
think it "sees" these things.
Jørn
RE: [Bug-gnubg] Recent RGB posting on "Change Dice" Option, Ian Shaw, 2002/12/05
RE: [Bug-gnubg] Recent RGB posting on "Change Dice" Option, Øystein O Johansen, 2002/12/05