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Subject: Re: Deep Blue and the

Author: Amir Ban

Date: 06:55:46 11/16/98

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On November 16, 1998 at 02:13:01, Ed Schröder wrote:


>>Yes, you got it right.
>
>>The PV for Deep-Blue on all iterations except the last starts 36.Qb6 Qe7
>>37.axb5 Rab8 38.Qxa6 e4 39.Bxe4 Qe5. In the last iteration, there's no PV.
>
>Thanks for posting the main variation. I clearly remember the end position
>again. Based on this impressive main variation I can come to no other
>conclusion other then that Deep Blue must have a speculative king safety.
>

I'm not ruling this out as an hypothesis, but please tell me: How does a
speculative king safety agree with moves such as g5 in the 1st game, b4 in the
4th game, and a generally solid style throughout the match ?


>The other explanation, a bug, sounds not fair to the Deep Blue team.
>

Actually bugs, or general malfunction during this part of the game, is quite
high in my list of possible explanations. There are a lot of strange things
going on. Here's one of them (the PV for iteration 10):

36. Qb6 Rab8 37. axb5 Rab8 38. Qxa6 e4 39. Bxe4 Qe5 40. Bf3 Rd8 41. Qa7 Qxc3 42.
Bh5

Question: how to explain the appearance of the move 41.Qa7 in the PV ?

Amir



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