Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: CCT7 Website it up - Listing of first entrants

Author: Uri Blass

Date: 01:26:41 12/13/04

Go up one level in this thread


On December 13, 2004 at 03:35:46, Uri Blass wrote:

>On December 13, 2004 at 00:59:12, Peter Skinner wrote:
>
>>On December 13, 2004 at 00:52:05, Anthony Cozzie wrote:
>>
>>>I mentioned earlier that I thought a small increment would be good, and it seems
>>>a number of other people have had similar thoughts.  The reason I like it is
>>>that with a long increment that one 150 move game just takes forever (at a 10s
>>>increment it would get an extra half an hour!), and with a tournament as big as
>>>CCT there is always SOMEONE who has a 150 move game.  Especially if Uri joins :)
>>> So I prefer having a mostly fixed timecontrol.  OTOH, this means that we will
>>>have to manage our time carefully.
>>>
>>>anthony
>>
>>Well there were a number of people that mentioned it here, and in emails to me.
>>
>>The consensus was to have each round last no more than 2 hours.
>>
>>First day = 5 rounds x 2 hours = 10 hours + 15 mins between rounds to ensure
>>proper pairings.
>>
>>That is a long day.
>>
>>The second day isn't much shorter either.
>>
>>And you can bet if Uri joins he will stretch that 50 + 3 into a day somehow :)
>>
>>Peter
>
>Yes
>
>Movei is an expert in long games
>
>I believe that in WBEC it was the first program to get a game with more than 300
>moves(a previous game against Ant could also get more than 300 moves but Leo
>stopped it and adjudicated it as a draw).
>
>Movei could do it shorter and win it's won position but I guess that lack of
>knowledge togetehr with not using hash tables for pruning was a problem for it.
>
>64.Kc5 and 65.Nc4 are winning but unfortunately movei cannot find these moves in
>a reasonable time and I doubt if it could win later.
>
>depth=20 +2.83 d5e5 d7c6 b6b7 c6c7 e5e6 c7b8 e6f6 f3d1 b4b5 b8c7 f6g5 c7b8 b5b6
>d1e2 g5f4 e2f3 f4f5 f3d1 f5e6 d1f3
>Nodes: 251995904 NPS: 754072
>Time: 00:05:34.18
>depth=20 +2.83 d5e5 d7c6 b6b7 c6c7 e5e6 c7b8 e6f6 f3d1 b4b5 b8c7 f6g5 c7b8 b5b6
>d1e2 g5f4 e2f3 f4f5 f3d1 f5e6 d1f3
>Nodes: 370056572 NPS: 752973
>Time: 00:08:11.46
>depth=21 +2.85 d5e5 f3g2 b4b5 g2f1 b6b7 d7c7 e5d5 c7b8 d5e6 f1g2 e6e5 g2f1 e5f5
>f1e2 f5f4 b8a7 b5b6 a7b8 f4g5 e2f3 g5f5 f3e2
>Nodes: 1146921733 NPS: 757669
>Time: 00:25:13.75

No surprise it cannot find it.

I used yace to analyze the position but Kc5 let the opponent to find a
repetition that movei evaluates as a draw.

It may be better to analyze the position one ply earlier
When movei missed a win by Nf7 based on yace.

No the win also come by repetition so it needs to analyze the position 2 plies
earlier when movei played Nd6+

[D]2k5/5N2/1P6/2K5/1P4p1/6P1/4b3/8 w - - 0 62

Uri



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.