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Subject: Re: Is Possible a Challenger in Playchess Dr Robert Hyatt Crafty and Quark ?

Author: Robert Hyatt

Date: 20:26:29 05/29/05

Go up one level in this thread


On May 29, 2005 at 11:17:27, Vasik Rajlich wrote:

>On May 29, 2005 at 08:45:21, Uri Blass wrote:
>
>>On May 29, 2005 at 06:57:36, Vasik Rajlich wrote:
>>
>>>On May 28, 2005 at 12:41:24, Vasik Rajlich wrote:
>>>
>>>>On May 28, 2005 at 11:18:05, Matthew Hull wrote:
>>>>
>>>>>On May 28, 2005 at 10:46:48, Vasik Rajlich wrote:
>>>>>
>>>>>>On May 27, 2005 at 18:02:25, Uri Blass wrote:
>>>>>>
>>>>>>>On May 27, 2005 at 17:54:57, Pablo Ignacio Restrepo wrote:
>>>>>>>
>>>>>>>>
>>>>>>>>Hello Thomas
>>>>>>>>I would like to see playing into playchess engines room, to Dr. Robert Hyatt
>>>>>>>>engines.
>>>>>>>>For me is a problem to play into ICC because I have not premoves into ICC, and
>>>>>>>>as a guest if there are disconnection immediately I will be lost.
>>>>>>>>I would like to play a challenger (just for fun and for testing engines to be
>>>>>>>>better engines and of course me too) into playchess against Crafty from Dr
>>>>>>>>Robert Hyatt and against Quark, if could be possible into main room better for
>>>>>>>>everyone.
>>>>>>>>Unique way for me to discover new ways will be playing in long time controls.
>>>>>>>>This has been a dream for me Thomas.
>>>>>>>>Best regard,
>>>>>>>>Pablo
>>>>>>>
>>>>>>>If I understand correctly
>>>>>>>I understand that engines lose on time automatically at move 257 in playchess
>>>>>>>and that this problem is not engine problem but interface problem.
>>>>>>>
>>>>>>>I think that if this problem is not fixed then engines suffer from unfair
>>>>>>>conditions in playchess.
>>>>>>>
>>>>>>>Uri
>>>>>>
>>>>>>It seems that maybe you don't understand the technique.
>>>>>>
>>>>>>A human with pre-move (and just enough lag) will always win a closed position on
>>>>>>time if the game is long enough - regardless of time control (as long as there
>>>>>>is no increment), and regardless of anything that happens on move 257.
>>>>>
>>>>>
>>>>>Bob Hyatt says crafty will never lose on time this way.  So far, Pablo has not
>>>>>been able to win against crafty on ICC with this technique.
>>>>>
>>>>>
>>>>>>
>>>>>>Vas
>>>>
>>>>Let me show you how to do it :)
>>>>
>>>>Vas
>>>
>>>Ok - crafty is damn hard to provoke into closing the position and I didn't have
>>>the patience for a zillion games.
>>>
>>>Still - the question is, how many moves will crafty play in a 3-minute game
>>>before running out of time. There is of course some limit, even if it's 1000.
>>
>>
>>If it is 1000 then the question is if it is possible to get a game of 1000 game
>>against the program.
>>
>> A
>>>pre-mover can play an infinite amount.
>>>
>>>Vas
>>
>>No
>>
>>After 50 moves with no capture and conversion the program claims a draw and
>>there is some practical limit for the number of moves in the game.
>>
>>I doubt if humans can play 1000 moves against a program without getting some
>>winning position in the process and without draw by the 50 move rule.
>>
>>
>
>That doesn't contradict anything I said. The point is that you can't say that
>Crafty will never lose on time. You can only say that in a 3 0 game, Crafty can
>play X moves, and that X is usually going to be enough.



In theory, crafty can play 180,000 moves in a 3 0 game.  In reality it won't,
because it will use more time up front.  But in that last second of time, it can
play 1000 moves.  Pre-move is going to get you absolutely killed there, for
reasons I have already stated.

We can set up a guest account test on ICC for you to try if you want.  I already
know the result.  _nobody_ tries that type of play against Crafty any longer.
Several used to.
>
>>
>>
>>A premover can be punished by some stupid sacrifice.
>>I do not think that it is very hard to make a program that detect premovers and
>>punish them by that way.
>>
>>Of course that way have risks but if the program is not deterministic about the
>>time of making the stupid sacrifice the opponent may lose most of the games
>>because he will be unable to guess when the program make the stupid sacrifice
>>and when to stop premoving.
>>
>
>Yes, of course. This sort of pre-move-based guessing is normal stuff in
>human-human bullet games. If you're good at it, it's easily worth 100 rating
>points.
>
>Vas
>
>>Uri



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