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Subject: Re: Kasparov - Deep Blue Bxh7!!

Author: Vincent Diepeveen

Date: 07:37:18 06/22/01

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On June 22, 2001 at 10:35:10, Harald Faber wrote:

>On June 22, 2001 at 08:28:01, Vincent Diepeveen wrote:
>
>>Hello,
>>
>>My dual has searched past few days at next position:
>>
>[D]2rr2k1/pp1qnppp/2n1p3/3p4/1bPP3P/1P2RNP1/PB3P2/1BRQ2K1 w - - 0 1
>>kasparov-deep blue 1996  bxh7!!
>>
>>Here is the result of the current diep version (threats on, recaptures
>>on, checks on, SE on, etcetera on):
>>
>>dual PIII800 150mb hash
>>01:39:58 0 0 415044900 (74138755) 14 0.468 a2-a3 Bb4-a5 b3-b4 Ba5-c7 Qd1-d3 Ne7-
>>g6 h4-h5 Ng6-f8 h5-h6 g7-g6 b4-b5 Nc6-a5 c4xd5
>>++ b1-h7
>>04:59:23 0 0 1234506378 (199255362) 14 0.767 Bb1xh7 Kg8xh7 Nf3-g5 Kh7-g6 Qd1-d3
>>Ne7-f5 g3-g4 Kg6-f6 g4xf5 e6xf5 a2-a3 Bb4-e7 c4xd5 Qd7xd5 Re3-e1 Be7-d6 Qd3-f3
>>
>>It is busy 42 hours now to get a new mainline for Bxh7 at 17 ply,
>>so i guess it has seen more than 10 billion nodes now.
>>
>>Score is 0.828 for Bxh7 after 17 hours though and my expectation is that
>>to get the next PV i need to wait another 40 hours at least, and that the
>>score hasn't changed too much, and i need my dual now to do other things!
>
>
>So you want to say that you just need a 50x faster machine (or 100x to be safe)
>that your Diep plays like Kasparow (:-)))) and makes the move in a tournament
>game? :-)

Deep Blue's score of 0.00 was not correct.

Note that a3 c5 b4 also wins chanceless for white, as proven by Kasparov
and obvious for any chessplayer.

Nevertheless Bxh7 is a cool shot for white.



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