Author: Gordon Rattray
Date: 03:33:05 08/21/02
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On August 20, 2002 at 21:48:59, Robert Hyatt wrote: >On August 20, 2002 at 18:42:07, Uri Blass wrote: > >>On August 20, 2002 at 17:49:34, Robert Hyatt wrote: >> >>>On August 20, 2002 at 17:02:52, Uri Blass wrote: >>> >>>>I include only gam,es from 1993 >>>> >>>>Deep Blue - Hamann,S >>>>5R2/r5pp/3N2k1/3Ppp2/2P5/p7/P5PP/2n3K1 w - - 0 38 bm Nb5 >>> >>>What did DT play here? I only find Nb5 and I find it instantly and stick >>>with it... score =+1.5 so apparently DT was winning here. Did it lose by >>>playing something else??? >> >>Yes it lost by Rxf5 >> >>This is a typical computer move because it wins a pawn if you do not search deep >>enough when Nb5 does not win a pawn(unless you search very deep and I am sure >>that your +1.5 is based on poasitional factors). > >The problem here is that we don't know what happened in the game. IE deep >thought _always_ played over a network connection. In the late 80's and >early 90's the net was not as accessible and reliable as it is today, and it >is certainly possible that they lost the connection, didn't know it, and >after they found out, they had to move quickly. Happened to me and Cray Blitz >many times. Happened to deep thought against Fritz in Hong Kong 1995 in >fact... I think I remember reading about this in a chess magazine (Chess Monthly, UK) at the time. DT played Rxf5 after about 30 seconds. Later it was discovered that a 42 second search would have found Nb5. Even if my figures aren't exact, I'm pretty sure they're close (I can dig it out if necessary). I don't know what the time control was for the game. Gordon [snip]
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