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Subject: Re: Won or lost?

Author: Robert Hyatt

Date: 20:02:15 05/05/02

Go up one level in this thread


On May 05, 2002 at 12:44:12, Terry McCracken wrote:

>On May 05, 2002 at 09:41:06, Vincent Diepeveen wrote:
>
>>On May 04, 2002 at 04:15:48, Ed Schröder wrote:
>>
>>>[d]8/8/7p/3bk1p1/2p3P1/2P1N1K1/8/8 w - - am Nxd5?
>>>
>>>This is an end position after 100 moves from an eng-eng match. How to judge the
>>>result, draw or is white lost after all?
>>
>>you should play it out. not stop eng-eng match after 100 moves.
>>
>>>In analysis mode to my surprise 101.Nxd5 failed low giving -5.98 (see below),
>>>thus losing. Can white draw with for instance 101.Kf2, I wonder.
>>>
>>>What do your engines say, especially those with table bases.
>>>
>>>Ed
>>>
>>>=================================================================
>>>
>>>00:00:03.6	-1,10	14	1780001	Nxd5 Kxd5 Kf3 Ke6 Ke3 Kf6 Ke4 Kg6
>>>00:00:03.0	-0,60	15	2276672	Nxd5 Kxd5 Kf3 Ke6 Ke3 Ke5 Kf3 Kd5
>>>00:00:03.9	-0,60	16	2606620	Nxd5 Kxd5 Kf3 Kd6 Ke4 Ke7 Kd5 Kf6
>>>00:00:05.2	-0,03	17	4188958	Nxd5 Kxd5 Kf3 Ke6 Ke3 Ke5 Kf3 Kf6
>>>00:00:06.0	-0,03	18	5758158	Nxd5 Kxd5 Kf3 Ke6 Ke3 Ke5 Kf3 Kf6
>>>00:00:10.6	-0,32	19	9055830	Nxd5 Kxd5 Kf3 Ke6 Ke3 Kf6 Ke4 Kg6
>>>00:00:15.9	-0,32	20	15587442	Nxd5 Kxd5 Kf3 Ke6 Ke3 Kf6 Ke4 Kg6
>>>00:00:28.2	-5,98	21	29760618	Nxd5 Kxd5 Kf3 Ke5 Ke3 Kf6 Kd4 h5
>
>
>Yes he could have played it out, but I think Ed was curious about this position,
>and wondered what would happen after 101.Kf2 which Century 4 wouldn't play.
>So he brought it to our attention.
>
>If 101.Nxd5? White loses quickly, after 101. Kf2 White may last longer but would
>still lose.
>
>I think he wanted an opinion, what we thought and what other chess engines would
>play.
>
>Maybe someone could plug in Kf2 and see how the analysis reads? I think that's
>what Ed really is interested in.
>
>Although it's still dead lost for White.
>
>Terry


After a couple of minutes, Kf2 (which Crafty prefers quickly after finding
Nxd5 is -5) also drops to -5 and seems to be lost...



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