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Backgammon Software

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Raymond Hall

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Jun 6, 2005, 9:08:48 PM6/6/05
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Any info would be welcome on obtaining a reasonably strong Backgammon game
(software) in order to play the PC. For Windows XP.

Many thanks in advance.

PS: I once had Backgammon software for my previous PC, (Win 95), but could
have sworn the strength of the game for the PC, was dictated by the dice
rolls. Maybe I'm just paranoid, but the double 6's always seemed to go the
PC's way when bearing off.

Ray H
Taree


georgeha...@yahoo.com

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Jun 6, 2005, 9:47:32 PM6/6/05
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http://www.terminalstudio.com/backgammon.shtml

Since you are already complaining about the dice of a program you don't
even know what it's called anymore, by reasonably strong, I guess you
want a weak program that barely understands the rules? Try the above:
Try not to laugh.

sooth

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Jun 6, 2005, 11:36:11 PM6/6/05
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www.gnubg.org
The program is free and is world-class strength. It's default setting
on installation, however, is only expert strength. It can also be set
to weaker levels if you wish. I will caution you, though, if you are
typical of backgammon players without a great deal of experience, you
may convince yourself the program cheats. It does not. If you don't
believe this, set it to use manual dice and roll them yourself.

Raymond Hall

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Jun 6, 2005, 11:46:20 PM6/6/05
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<georgeha...@yahoo.com> wrote in message
news:1118108852.2...@f14g2000cwb.googlegroups.com...


Incorrect assumption. By reasonably strong I mean reasonably strong. Period.

The only laugh I have had today is your reply. As per usual, most newsgroups
are full of idiots. You are one of them. Thanks for nothing.

Ray H
Taree


Raymond Hall

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Jun 6, 2005, 11:52:23 PM6/6/05
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"sooth" <dontcirculat...@spammersarescum.org> wrote in message
news:d834nb$h...@dispatch.concentric.net...

Many thanks for a helpful reply. I did go to some pain to stress that I
didn't actually believe the dice might have been biased, on the previous
program, and stressed it was probably undue suspicion on my part. I forget
the program now, but a very short list of viable names will jog the memory.

Ray H
Taree


ashtonhaze

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Jun 7, 2005, 10:13:11 AM6/7/05
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sooth wrote:


> www.gnubg.org
> The program is free and is world-class strength. It's default setting
> on installation, however, is only expert strength. It can also be set
> to weaker levels if you wish. I will caution you, though, if you are
> typical of backgammon players without a great deal of experience, you
> may convince yourself the program cheats. It does not. If you don't
> believe this, set it to use manual dice and roll them yourself.

Yes indeed sooth

www.gnubg.org is a great program that can help even the most seasoned
players,but still has tutor mode and other features for beginner to
intermeditate players.

mwse...@yahoo.com

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Jun 7, 2005, 12:59:44 PM6/7/05
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Jellyfish isn't bad, either, and plays at a world-class level. You can
download the most basic version (it just plays, no analysis, or
anything) for free. http://www.jellyfish-backgammon.com/

I've got to give kudos to GNU, however. GNU has to be the best there
is. World-class play, a full range of features (analysis, tutor mode,
etc.), and eye-popping graphics. All that at a competitive price --
free!

Raymond Hall

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Jun 7, 2005, 8:09:33 PM6/7/05
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<mwse...@yahoo.com> wrote in message
news:1118163584....@f14g2000cwb.googlegroups.com...


Jellyfish version 3 rings a bell now. Not bad, and the version where I
suspected "loaded" dice.

But the GNU program is just awesome. Many thanks to all concerned for this
program. Loaded like a dream and installed in a jiff. The analysis is super
great too, and even gives me an analysis of the 'luck' side of it wrt the
dice. Needless to say, I won't report on its analysis of my moves for one
match<g> And I had super dice rolls too, compared to GNU.

Embarassing.

Ray H
Taree


Michael Sullivan

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Jun 8, 2005, 5:15:50 PM6/8/05
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Raymond Hall <rayt...@bigpond.com> wrote:

> <mwse...@yahoo.com> wrote in message
> news:1118163584....@f14g2000cwb.googlegroups.com...
> > Jellyfish isn't bad, either, and plays at a world-class level. You can
> > download the most basic version (it just plays, no analysis, or
> > anything) for free. http://www.jellyfish-backgammon.com/

> > I've got to give kudos to GNU, however. GNU has to be the best there
> > is. World-class play, a full range of features (analysis, tutor mode,
> > etc.), and eye-popping graphics. All that at a competitive price --
> > free!

> Jellyfish version 3 rings a bell now. Not bad, and the version where I
> suspected "loaded" dice.

JF3 was world class or close (though GNU is somewhat stronger). You
suspected loaded dice because it was just that much better than you.

Don't worry, it's a lot better than almost everybody else too.


Michael

montygram

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Jun 8, 2005, 11:39:24 PM6/8/05
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I've played thousands of games on Jellyfish and GNU. GNU is clearly
better. However, when it comes to dice rolling, do it yourself. When
you do, you usually will get a long, positional game, whereas when the
game does it, it's over quickly most of the time, and you are on the
losing end almost all the time. When I want a "quickie game," and let
it roll, I almost always wind up laughing at how ridiculous the rolls
are. You get bust up rolls (33s and 44s)whenever you get a good
position, and the game gets the 55s, 66s, or 11s, 22s in similar
positions (whichever is better for the game). The worst thing, though,
is how you roll 66, 11, 61 (sometimes in a row), when you are trying to
enter off the bar and he's got his 6 and ace points covered, and he
proceeds to quickly close you out with the perfect doubles. Again, you
just have to laught at it.

grapelli

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Jun 9, 2005, 1:37:42 PM6/9/05
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montygram wrote:
> However, when it comes to dice rolling, do it yourself. When
> you do, you usually will get a long, positional game, whereas when the
> game does it, it's over quickly most of the time, and you are on the
> losing end almost all the time.

Nobody would work on a free program for years and then manipulate the
dice. But there's nothing wrong with rolling the dice yourself. But
wait, you sure your dice are correct? Judging from your observations,
your dice are pretty bad. I'd recommend you use the fair dice of gnubg
instead.

montygram

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Jun 12, 2005, 11:40:40 PM6/12/05
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I can't explain the why of it. All I can say is that if you don't
believe me, just play GNU in automatic dice roll, but use the hint
feature and play all the moves it recommends. You'll find that you get
your butt kicked, losing at least 60% of the points, but probably a lot
higher percentage. Yet if you roll it out manually (assuming you are a
decent player) you can hold your own, winning about 50% (on the top
setting) of the points.

Simon Woodhead

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Jun 13, 2005, 1:32:14 AM6/13/05
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grapelli

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Jun 13, 2005, 6:03:32 AM6/13/05
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montygram wrote:
> I can't explain the why of it. All I can say is that if you don't
> believe me, just play GNU in automatic dice roll, but use the hint
> feature and play all the moves it recommends.

I do that quite a lot.

> You'll find that you get
> your butt kicked, losing at least 60% of the points, but probably a lot
> higher percentage. Yet if you roll it out manually (assuming you are a
> decent player) you can hold your own, winning about 50% (on the top
> setting) of the points.

You compare your performance against two different settings of Gnu. Do
you have the slightest idea, how many games you would have to play (for
each setting), to make your observation statistically convincing?
Backgammon is a casino game. You will win LESS than 50% against Gnu
(any setting) in the long run even when relying on the tutor, because
the tutor doesn't detect ALL mistakes, unless you change it's settings.

montygram

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Jun 13, 2005, 6:56:46 PM6/13/05
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I took a look at Simon's link, and I agree with Kit Woolsey, in that if
you set up a certain kind of position, you can evaluate it with more
clarity. Two situations stand out. One is the beginning of games,
where you get wiped out within the first few moves (if you're lucky to
last that long). The software gets it in its favor well over 50%. The
other is the blitz. If he gets a 55 early, so that he's got 3
homeboard points made (or sometimes just his 6 and ace points), you
better be a good dancer, because you're going to get 11, 16, and 66 a
lot more than can be in the realm of statistical possibility. When you
blitz the software, it's no problem for it to get in, often making an
anchor. The reason why I'm bothering to post this is that a) I don't
want people to get discouraged and give up backgammon for poker after
playing these programs (enough of that going on already), and b) I
don't want people to start to adjust their play to deal with the
software (becoming very cautious after getting hit with jokers just
about every time, even 1 in 36 shots), creating serious weaknesses in
your game, and that is why I suggest never using auto roll, unless you
want a good laugh. As I've said before, it's the quality of the game
that differs so dramatically. If I play 20 games a day, as is often
the case, I will break out about even over the long run against manual
dice, usually playing long positional games, but I get destroyed,
usually within the first few moves, against auto roll. If someone has
a different experience, good for you - then you'll save time doing the
maual rolls. I've created a quick roller. For those interested, I got
a clear glass jar and put dice in it and put the lid on. Then you just
turn it upside down and shake a few times.

Raymond Hall

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Jun 13, 2005, 8:44:13 PM6/13/05
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"montygram" <nazzt...@lycos.com> wrote in message
news:1118703406.8...@g14g2000cwa.googlegroups.com...

> maual rolls. I've created a quick roller. For those interested, I got
> a clear glass jar and put dice in it and put the lid on. Then you just
> turn it upside down and shake a few times.


I thought there may have been an independant little bit of software, that
gave truly random dice throws. Tests for randomness would be required and
statistically, (forcing me to get my stats books out), there are definite
tests for degrees of randomness.

But surely an independant bit of software is all that is needed, n'est-ce
pas, in order to clear the software one is playing?

Btw, the clear jar is a good idea, but the throws would need to examined and
tested statistically in order to prove true mathematical randomness.

Ray H
Taree


Simon Woodhead

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Jun 13, 2005, 8:47:56 PM6/13/05
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If you really believe the cheating conspiracy, and you aren't
prepared to back it up with actual and meaningful proof or
statistics (the source code of gnubg is available for you to
point out the places where the cheat code is), then try the
experiment below, posted here on Jan 13 2003. Full thread
available via Google:

http://groups.google.com.au/group/rec.games.backgammon/browse_thread/thread/c5fbe287c54a881c/661b60cf3ee06d69?q=gnubg+cheat+dice&rnum=6&hl=en#661b60cf3ee06d69

Also try Googling in Groups for "gnubg cheat dice"; you'll
find this conversation repeated ad nauseam.

> For anyone here, now and in the future, who tends to believe the cheat
> gospel of Saint Murat.....there is a relatively simple and efficient
> way to prove to yourself that a certain bot does not cheat:
>
> -get two computers,
> -place them side by side,
> -install the program under investigation on both computers,
> -run a game or match on computer #1 via the internal dice engine,
> -copy the same rolls via manual dice on computer #2.
>
> Lo and behold ! Surprise, surprise...
> ...the moves and cube offerings of the bot on computer #2 are
> identical to the ones on computer #1.
>
> And indeed, if this is not the case, there is "cheating"going on.

Simon Woodhead

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Jun 13, 2005, 9:12:14 PM6/13/05
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Raymond Hall wrote:

> I thought there may have been an independant little bit of software, that
> gave truly random dice throws. Tests for randomness would be required and
> statistically, (forcing me to get my stats books out), there are definite
> tests for degrees of randomness.
>
> But surely an independant bit of software is all that is needed, n'est-ce
> pas, in order to clear the software one is playing?

http://www.random.org/

gnubg->Settings->Options->Dice->random.org

Adam Tansley

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Jun 14, 2005, 7:01:18 AM6/14/05
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OMG !
Gnubg does NOT cheat !!
It is better than you. If you are Kit Woolsey it is probably better than
you !!!
When you play Gnubg you are playing against some of the best real-time
backgammon on the planet.
It does not need to cheat in order to beat you.
As standard Gnu uses the Mersenne Twister random number generator, reckoned
to be one of the best around. It also provides as alternatives (in case you
don't like M. Twister) random.org, MD5, ISAAC, BSD, Blum Blum & Shub, and
ANSI.

Rather than wasting time rolling real dice and then inputting the roll into
Gnu, use that time to improve your game by asking Gnu to point out your
errors. As your game improves you may notice that Gnu "cheats" less and
less.


Raymond Hall wrote in message

David C. Ullrich

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Jun 14, 2005, 8:10:32 AM6/14/05
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On Tue, 14 Jun 2005 11:12:14 +1000, Simon Woodhead <si...@uniq.com.au>
wrote:

That's interesting, not that it matters to __me_.

But when I looked that up I noticed another option
"File". Didn't check it out, but if "File" works
anything like in Jellyfish this means you can set
gnubg to take its dice rolls from a text file
(maybe you put the filename in the Seed box,
maybe it has to be a certain filename?)

If that's the way it works then this gives a person
a way to make it use whatever random number generator
you want, with a little programming maybe: Make a
program that uses your favorite random number generator
to write a file of random numbers and then starts
gnubg.

************************

David C. Ullrich

Raymond Hall

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Jun 14, 2005, 4:14:00 PM6/14/05
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"Adam Tansley" <ad...@tansley.wanadoo.co.uk> wrote in message
news:d8mde4$pi2$1...@news7.svr.pol.co.uk...

> OMG !
> Gnubg does NOT cheat !!
> It is better than you. If you are Kit Woolsey it is probably better than
> you !!!
> When you play Gnubg you are playing against some of the best real-time
> backgammon on the planet.
> It does not need to cheat in order to beat you.
> As standard Gnu uses the Mersenne Twister random number generator,
> reckoned to be one of the best around. It also provides as alternatives
> (in case you don't like M. Twister) random.org, MD5, ISAAC, BSD, Blum Blum
> & Shub, and ANSI.
>
> Rather than wasting time rolling real dice and then inputting the roll
> into Gnu, use that time to improve your game by asking Gnu to point out
> your errors. As your game improves you may notice that Gnu "cheats" less
> and less.


I never suggested gnubg cheated. In fact playing it, so far, I am very
impressed, not only with its play, but the piece of software itself is a
gem. Its analysis of my games so far suggest that my cube strategy is
"awful". Will have to bone up on some reading about efficient use of the
cube.

Ray H
Taree


mwse...@yahoo.com

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Jun 14, 2005, 6:01:39 PM6/14/05
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I've done this on occasion, and haven't had a problem creaming GNU when
doing so, even at World Class level.

At any rate, this isn't a conclusive test. All the recommended moves
are is a suggestion based on what is most likely to happen given the
current state of the board/match/cube/etc. Unfortunately, of all valid
rolls, none is impossible, and you can't eliminate the highly
improbable (I once rolled 6-6, 5-5, 6-6 during a particularly close
bearoff -- impossible? No. Improbable? You bet. I got accused of
cheating). Just because GNU suggests a particular move as best, doesn't
mean that the next roll will make the suggested move backfire.

Personally, I've found that the better I get at backgammon, the worse
GNU and Jellyfish seem to play.

Jim Segrave

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Jun 14, 2005, 6:02:42 PM6/14/05
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In article <71ita11albpldfadc...@4ax.com>,

David C. Ullrich <ull...@math.okstate.edu> wrote:
>
>That's interesting, not that it matters to __me_.
>
>But when I looked that up I noticed another option
>"File". Didn't check it out, but if "File" works
>anything like in Jellyfish this means you can set
>gnubg to take its dice rolls from a text file
>(maybe you put the filename in the Seed box,
>maybe it has to be a certain filename?)
>
>If that's the way it works then this gives a person
>a way to make it use whatever random number generator
>you want, with a little programming maybe: Make a
>program that uses your favorite random number generator
>to write a file of random numbers and then starts
>gnubg.

Create a text file with one roll per line:

==========
61
33
42
54
61
11
13
15
46
32
16
42
55
44
34
13
...
==========

The first time gnubg wants a roll, it will ask for the name of the
file. When the file is exhausted, gnubg starts over at the beginning.


--
Jim Segrave (j...@jes-2.demon.nl)

montygram

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Jun 15, 2005, 12:34:54 AM6/15/05
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I want to make clear that I think both programs, but particularly GNU,
are great for improving one's game. The fact that they are free is
even more amazing, and those who did this deserve nothing but praise.
With manual rolling, it's great, but the jokers I get against me when
it's on automatic led me to try it in manual, and the fact that the
games took on a long, positional contest so much more often (along with
the numerous jokers at the worst time, several times a day!) led me to
the conclusion that something is not "random." If it is just "static,"
so be it, but I'll stick to the manual rolls when I want to be sure no
nonsense is involved, whatever the cause.

grapelli

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Jun 15, 2005, 3:37:17 AM6/15/05
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Amazing, the unsurpassed ability of the human mind to create a cause
from an effect. What was helpful in the evolution so far, has it's
disadvantages in the modern world. It's hardly ever bad breath if your
computer doesn't like you.

David C. Ullrich

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Jun 15, 2005, 8:20:18 AM6/15/05
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Keen - thanks. (Again, not that _I_ have silly ideas
about gnubg cheating with the dice...)

On Tue, 14 Jun 2005 22:02:42 -0000, Jim Segrave <j...@nl.demon.net>
wrote:


************************

David C. Ullrich

David Kinston

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Jul 6, 2005, 3:40:36 AM7/6/05
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Isn't it obvious that the program can identify the sequence
of numbers the rolls came from?
Not to mention program-to-program communication ...

Talk about naive!!

DK

"Simon Woodhead" <si...@uniq.com.au> wrote in message
news:42ae29ba$1...@duster.adelaide.on.net...

Simon Woodhead

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Jul 6, 2005, 8:02:40 PM7/6/05
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David Kinston wrote:

> Isn't it obvious that the program can identify the sequence
> of numbers the rolls came from?

With manual dice ? I'd like to know how...

> Not to mention program-to-program communication ...

In the test below, the computers are not connected ...

> Talk about naive!!

Indeed!!

> DK

SW

Cat_in_awe

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Jul 7, 2005, 9:46:56 AM7/7/05
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David Kinston wrote:
> Isn't it obvious that the program can identify the sequence
> of numbers the rolls came from?
> Not to mention program-to-program communication ...
>
> Talk about naive!!
>

It is trivial with any bot to prove that it doesn't choose different dice
based on the current position. Nor can you demonstrate that knowing what
will come next (in the upcoming sequence of dice that will be coming from
the RNG) that it will ever choose a different play based on a different
sequence of rolls that will come next.

You aren't naive, just ill-informed and wrong.

--
GPC


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