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Subject: Re: Longer time controls

Author: martin fierz

Date: 15:12:44 04/29/02

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On April 29, 2002 at 18:05:25, Robert Hyatt wrote:

>On April 29, 2002 at 17:13:31, martin fierz wrote:
>
>>On April 29, 2002 at 16:55:45, Robert Hyatt wrote:
>>
>>>On April 29, 2002 at 16:15:27, Roy Eassa wrote:
>>>
>>>>On April 29, 2002 at 15:50:21, Robert Hyatt wrote:
>>>>
>>>>>On April 29, 2002 at 13:56:58, Roy Eassa wrote:
>>>>>
>>>>>>
>>>>>>How do longer time controls affect humans and computers?
>>>>>>
>>>>>>For humans, the extra time mainly provides better "debugging" of one's analysis.
>>>>>> It also gives more chances to find different lines and greater depth, but these
>>>>>>are quite secondary for human GMs, IMHO.
>>>>>>
>>>>>>For computers, better debugging is (almost) not an issue.  They make no tactical
>>>>>>errors within their horizons.  What the extra time gives computers is mainly
>>>>>>greater search depth.  But doubling the time does not even add 1 ply usually.
>>>>>>
>>>>>>So, which factor makes the bigger difference, GMs getting debugging that's twice
>>>>>>as good or computers getting less than 1 ply of greater depth?
>>>>>>
>>>>>>When GMs lose to computers, it's *almost always* due to insufficient debugging.
>>>>>>Doubling the time (for example) can make a HUGE difference here.
>>>>>>
>>>>>>When computers lose to GMs, it's *occasionally* due to insufficient depth that
>>>>>>could be cured by doubling the time.
>>>>>>
>>>>>>Obviously, both humans and GMs play stronger on an *absolute* scale when given
>>>>>>more time.  But I think it's most likely that GMs benefit *proportionally* much
>>>>>>MORE than computers do from the additional time.
>>>>>
>>>>>]
>>>>>It is trivial to test.  play some game/1 game/5 game/15 and game/60 games
>>>>>vs the same GM.  See what happens.  I already know. :)
>>>>
>>>>
>>>>Trivial?  Maybe YOU have a human GM lying around your house, waiting to do this,
>>>>but I don't!  ;-)
>>>
>>>
>>>Play such a series of games against _any_ human...  the resulting curve will
>>>be roughly the same...
>>
>>dear bob,
>>
>>if you have such numbers, could you please post them? there are people here who
>>believe in things like "humans get tired if they think for a long time" and
>>other crazy stuff like that - i have no numbers to disprove their statements,
>>but i know they are wrong. do me a favor please :-)
>>
>>aloha
>>  martin
>
>
>I don't save 'em...
>
>but from experience..
>
>Crafty vs a GM
>
>at 1 0 will win almost every game
>
>at 5 0 will win most games by a big margin but will draw or lose one here
>and there.
>
>at 15 0 will win the majority of the games but will lose a few more and draw
>several more.
>
>at 30 0 will win more than it loses with even more draws thrown in.
>
>at 60 0 it might "break even" or do slightly better.
>
>The curve is clear.  As you give both more time, the humans do better and
>better vs the computer.  It has _always_ been this way...  IE when Deep Thought
>was producing its 2650 over 25 games, IM Mike Valvo played it two games at one
>move per day and totally trounced it in both, while at blitz he had absolutely
>no chance and at 40/2hr would have had great trouble holding on to his head...
>
>Another way is to check out computer ratings on ICC.  Bullet ratings are always
>higher then blitz, while blitz ratings are always higher than standard.  Same
>idea...

hi bob,

thanks for the description. now, if you could only save these numbers for a few
weeks and post them here, this discussion could be laid to rest :-)

aloha
  martin



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