Author: Dann Corbit
Date: 20:57:28 02/24/03
Go up one level in this thread
On February 24, 2003 at 23:33:48, Robert Hyatt wrote:
>On February 24, 2003 at 23:07:19, Dann Corbit wrote:
>
>>On February 24, 2003 at 22:06:51, Robert Hyatt wrote:
>>
>>>On February 24, 2003 at 20:38:31, Sune Fischer wrote:
>>>
>>>>On February 24, 2003 at 20:23:07, Robert Hyatt wrote:
>>>>
>>>>>On February 24, 2003 at 20:17:05, Sune Fischer wrote:
>>>>>
>>>>>>Hey there.
>>>>>>
>>>>>>I've dumped the triangle PV and are extracting from hash now.
>>>>>>I'm wondering if what's happening here is normal....
>>>>>>
>>>>>>Sometimes when it finds a repetition it seems to go in a loop creating
>>>>>>infinitely long PV's. What is the right way to handle this, should I cut the PV
>>>>>>after 1st or 2nd rep, or just let it go nuts?
>>>>>
>>>>>Think about it. If you go thru one loop, you will go thru an infinite number.
>>>>>:)
>>>>
>>>>Yeah thought that was reasonable, but I couldn't figure out if maybe the depths
>>>>on the entries played a role here, but guess they don't.
>>>>
>>>>>Cut the PV at the _first_ repetition. :)
>>>>
>>>>Okay, so do you print the first repeated move, as in
>>>>1.Qa4+ Bd7 2.Qb3 Be6 3.Qa4+ or just
>>>>1.Qa4+ Bd7 2.Qb3 Be6 ?
>>>>
>>>>>Or else find a way to do int pv[infinity].
>>>>>
>>>>>:)
>>>>
>>>>Hang on, I need a moment to reflect on that one.. :)
>>>>
>>>>-S.
>>>
>>>It's a matter of taste of course. But I lop the thing off after making
>>>and printing the move, and then noticing it is repeated. That "closes"
>>>the PV so that I can see what is happening.
>>>
>>>You have to do this if you print EGTB PVs as well, obviously. Been there
>>>and debugged that problem too. :)
>>
>>How about showing the 3-fold repetition? Obviously, there is no need to repeat
>>past that point.
>
>
>Note that we are talking about a _loop_ in the actual PV shown. Once you see
>the second repeat, it is over, as you can then just duplicate what you have
>displayed so far, as many times as you want. :)
>
>This isn't an issue so much about the game history, just about closing the
>loop in the PV being displayed...
>
>Displaying to the 3rd rep would be ok, but definitely redundant since the same
>series of moves would be displayed two times, which would make the program a
>bit "noisy"..
Maybe a shorthand like {3x} at the end to show the detection of a loop.
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