Efe,

Correct, that only happens when the cube has already been turned. The tutor
doesn't inform about the mistake nor mark the move with yellow.

Joaquin


2009/3/18 <[email protected]>

> Dear Christian, Joaquín, Max,
>
> I just stumbled again upon a faulty "Too Good To Double" tutor error during
> one of my matches against Gnubg.
>
> Attached is the match file for your observation - I occured during Game 5.
> I knew it was too good to double anyway, but tried it just to see whether
> the tutor was going to stop me against committing this mistake. According to
> the anaysis pane, it was a blunder of 0.764 points magnitude marked with a
> big yellow!!! Obviously, Gnubg dropped it...
>
> I guess you can open the same file with your own Gnubg and then continue
> Game 5 from the Redouble move onwards. Please inform me how the match
> continues for you? Does the tutor warn you against the move or does it just
> go ahead with your decision just to let Gnubg pass the cube?
>
> I am now wondering with suspect, whether the tutor is not functioning
> correctly for "Too Good To Double" *when the cube is already turned*??? Anyone
> wanna comment on this??
>
> Kind Regards,
>
> Efe
>
>
>
>
>
> --- On *Sat, 14/3/09, [email protected] <[email protected]>*wrote:
>
>
> From: [email protected] <[email protected]>
> Subject: Re: [Bug-gnubg] Problems with Gnubg 04-Mar-2009 release
> To: "Christian Anthon" <[email protected]>, "Joaquín Koifman" <
> [email protected]>, "Massimiliano Maini" <[email protected]>
> Cc: [email protected]
> Date: Saturday, 14 March, 2009, 11:36 AM
>
>    Dear Christian, Joaquín and all,
>
> I have some further diagnosis and observations since yesterday that I would
> like to share with you upon Joaquín's request:
>
> 8) I realize now that my older version (Sep-08) is analyzing the match
> "on-the-go" [player0, analysis and evaluation settings in both versions all
> set as checker play="supremo", cube play= "worldclass", tutor decision="same
> as evaluation"]. What I mean with this is that when I for example make a
> very lucky, very unlucky, doubtful, bad, very bad move etc, I immediately
> see its effects (bold, italics, colored etc.) in the "Game Record" panel
> after I confirm my move by clicking on the dice.
>
> On the other hand, the newer version (Mar-09) does not do this "on-the-go"
> analysis right after the move. All comments (bold, italics, bad, very bad,
> lucky, unlucky etc.) only appear in the "Game Record" panel, if and only if
> you perform a full analysis of the match afterwards. In addition, the
> missing "delta equity" for each move with respect to the average dice roll
> in the parenthesis also appears surprisingly after the analysis!
>
> This is basically the reason why it is taking so short for the older
> version to analyze the match (since it is just analyzing gnubg's moves -
> half the work!), whereas the newer version starts everything from scratch. I
> double-checked the settings for everything and can assure you that they are
> the same. Does this mean anything to you? Do you encounter the same problem?
> Is it in anyway related to an already addressed error?
>
> A) After Joaquín's request, I tried to artificially create some "Too Good
> To Double" positions by using the edit mode. He is right - I could not see
> the problem at least in these examples anymore with Mar-09 version - maybe
> this problem also depended on the match scores when I encountered them in
> the past?
>
> Therefore, I assume for now that the Tutor works fine with the newer
> version regarding "Too Good To Double" decisions. If I ever encounter a
> similar error in the future during any of my matches, I will same the game
> and forward it as a concrete evidence for your inspection.
>
> C) As I wrote in my original mail, those cases were *definitely* wins or
> losses for Gnubg and its equity was already probably -1.000 or +1.000. So
> Joaquín's argument makes sense. Since all possible moves are having the same
> equity value at that instant, Gnubg cannot differentiate between them and
> probably picks "any random" one amongst them. That's the only reasonable
> explanation for it.
>
> Kind Regards & Nice Weekend to all!
>
> Efe
>
>
> --- On *Fri, 13/3/09, Joaquín Koifman <[email protected]>* wrote:
>
>
> From: Joaquín Koifman <[email protected]>
> Subject: Re: [Bug-gnubg] Problems with Gnubg 04-Mar-2009 release
> To: "Christian Anthon" <[email protected]>
> Cc: [email protected],
> "Massimiliano Maini" <[email protected]>, [email protected]
> Date: Friday, 13 March, 2009, 2:24 PM
>
> Hi all,
>
> A couple of comments about some issues:
>
> 1) It's still not solved in the 20080313 version.
>
> 8) I think that what happened was that the match was already analyzed. 45
> seconds is normal for an analysis while 5 seconds is very, very fast.. Could
> you try to reproduce it again, Efe?
>
> A) I couldn't reproduce neither in the 20080313 version nor in the 20080304
> one.
>
> C) Probably gnubg had already won the match or there was no posibility that
> it could save the gammon, in the examples you gave. Thus, the program made
> any move because the equities would be all the same. Could you check this
> also?
>
> Joaquin
>
>
>
>
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