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Subject: Re: ACM1994

Author: Robert Hyatt

Date: 10:59:18 09/18/05

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On September 18, 2005 at 12:00:09, Vincent Diepeveen wrote:

>On September 18, 2005 at 10:45:19, Robert Hyatt wrote:
>
># Name 1 2 3 4 5 P BU SB G
>1 Deep Thought II 2w1  5b0  7w1  3b1  5b1  4  13½ 11  5
>2 Zarkov          1b0  6b1  4w1  5b=  3w1  3½ 15  9¾ 5
>3 Star Socrates   10w1 7b1  5w1  1w0  2b0  3  12½ 5  5
>4 Now             6w=  10b= 2b0  8w1  9b1  3  10½ 5½ 5
>5 Mchess Pro      8b1  1w1  3b0  2w=  1w0  2½ 16½ 7¾ 5
>6 Cray Blitz      4b=  2w0  9w1  7b0  10w1 2½ 11  4  5
>7 Wchess 9w1      3w0  1b0  6w1  8b0       2  13½ 4½ 5
>8 Evaluator       5w0  9b0  10w1 4b0  7w1  2  10  2½ 5
>9 Innovation II   7b0  8w1  6b0  10b1 4w0  2  10  2½ 5
>10 Spector        3b0  4w=  8b0  9w0  6b0  ½ 12½ 1½ 5
>
>Zarkov from those days had no problems beating your 3 million nps Cray Blitz.
>Nor had Wchess problems beating your 3 million nps Cray Blitz.
>

Ask John about the game.  First, this was a 500K program for rounds 2-4.  And
when you ask him, he'll tell you about our rather severe crash problem due to a
missing test to limit ply to 64 or less.  And in a couple of cute places, we
went beyond that limit, crashed, and burned.  We fixed it for the last round,
but it really didn't matter to the final results.

But notice the issue was about deep thought, _not_ about Cray Blitz.  Did you
see any of the micros coming close?  (hint:  round 2 was a forfeit which is why
they were paired a second time, round 2 never got started for the DT MCP game).


>I remember how Wchess a few years ago was online at icc. Old Crafty had no
>problems beating it.

Then your memory is faulty.  He used to beat Bruce and myself regularly...

Directly from the ICC search command:

wchessx won 663 wins by wchessx, 370 wins by crafty, 264 draws.  Ever a chance
you will check your data before publishing bad numbers?  Wchess had about a 2:1
winning ration.  I'd hardly say "Crafty had no problems beating it."  In fact
Crafty had _great_ problems beating it.  BTW wchessx / ferret played pretty
closely on ICC. the "search" command will show how closely...



>
>Let's find those games somewhere in the archives... ...and see how strong
>Cray Blitz tactical was...
>
>Vincent
>
>>>I think that saying that it could not touch deep thought on that machine is
>>>misleading because I remember that Cray blitz that played on tournaments
>>>searched significantly less than 7M nodes per seconds.
>>
>>In 1994 we ran on this machine.  In 1993 I believe we ran on a C90, which was
>>searching around 3M nodes per second...  Both of these at the ACM events in
>>Indianapolis, Indiana, and Cape May, New Jersey...
>>
>>
>>
>>
>>>
>>>If you want to claim that latest Cray blitz on the machine that searched 7M
>>>nodes per second was probably weaker than Deep Thought then you cannot use data
>>>about tournaments when Cray blitz searched 200K nodes per second or 500 Knodes
>>>per seconds.
>>>
>>>Uri
>>
>>we use the C90, which was just under 1/2 as fast for the last two ACM events
>>that were held.  Our NPS numbers went beyond 2.0M.  You can not look at the
>>tournament reports to get NPS because we never knew what machine we would be
>>using at actual game-time, and had to "guess" on the entry form.  But we did
>>play them on the C90 (deep thought II) as well as played a slower version of
>>deep thought on a 200-500K program on a Cray-YMP, and on a C90 with just 8
>>processors.
>>
>>We often used 2-3 different machines during the course of a tournament, and
>>sometimes had to switch machines in the middle of a game, due to scheduling
>>issues.  For example, in the game at the 1986 WCCC against HiTech, we had to
>>switch machines at either 8am or 8am CST, because of Cray's schedule at the
>>computer center we used.  We switched from the fastest thing they made to
>>something slower.  Happened regularly.
>>
>>In 1994, DT lost the first round game against MchessPro without ever playing a
>>move, due to a power failure at Watson center.  They _still_ won the tournament
>>after giving away one free point.  And not a person there was surprised, either,
>>further showing just how strong we all thought they were.



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