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Subject: Re: 1st Berlin Emanuel Lasker '1 Final Results

Author: Christophe Theron

Date: 18:54:49 10/04/01

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On October 03, 2001 at 21:43:54, Heiner Marxen wrote:

>On October 03, 2001 at 18:35:55, Christophe Theron wrote:
>
>>On October 03, 2001 at 17:38:24, Theo van der Storm wrote:
>>
>>>Compact table (final results)
>>>
>>>  # Name                   1    2    3    4    5    6    7 Score  BU
>>>  1 Gambit Tiger 14.6     6w1  4b1  2w1  3b0  5w=  7w1  8b=  5.0  28.0
>>>  2 Rebel Maastricht      3b= 10w1  1b0  7w1  4b1  6w=  9b1  5.0  23.0
>>>  3 YACE 0.99.56          2w=  7b=  5b=  1w1  8b1  9w1  4b0  4.5  26.0
>>>  4 Zarkov 4.5T           8b1  1w0  7b=  9w1  2w0 10b1  3w1  4.5  22.0
>>>  5 PATZER 3.61           7w=  9b=  3w=  6b=  1b=  8w1 10w1  4.5  21.0
>>>  6 Bringer 1.9 beta      1b0  8w= 10b1  5w=  9b1  2b=  7w=  4.0  22.0
>>>  7 Quark v1.60 Berlin    5b=  3w=  4w=  2b0 10w1  1b0  6b=  3.0  28.0
>>>  8 IsiChess X            4w0  6b=  9w= 10b1  3w0  5b0  1w=  2.5  24.5
>>>  9 Neurologic           10b=  5w=  8b=  4b0  6w0  3b0  2w0  1.5  25.5
>>> 10 Lokal-Matador         9w=  2b0  6w0  8w0  7b0  4w0  5b0  0.5  25.0
>>>
>>>
>>>  # Name                  1  2  3  4  5  6  7  8  9 10 Score  BU   SB     G
>>>  1 Gambit Tiger 14.6     X  1  0  1  ½  1  1  ½  .  .   5.0  28.0 20.00  7
>>>  2 Rebel Maastricht      0  X  ½  1  .  ½  1  .  1  1   5.0  23.0 13.75  7
>>>  3 YACE 0.99.56          1  ½  X  0  ½  .  ½  1  1  .   4.5  26.0 15.25  7
>>>  4 Zarkov 4.5T           0  0  1  X  .  .  ½  1  1  1   4.5  22.0 10.50  7
>>>  5 PATZER 3.61           ½  .  ½  .  X  ½  ½  1  ½  1   4.5  21.0 12.00  7
>>>  6 Bringer 1.9 beta      0  ½  .  .  ½  X  ½  ½  1  1   4.0  22.0  9.50  7
>>>  7 Quark v1.60 Berlin    0  0  ½  ½  ½  ½  X  .  .  1   3.0  28.0  9.25  7
>>>  8 IsiChess X            ½  .  0  0  0  ½  .  X  ½  1   2.5  24.5  5.75  7
>>>  9 Neurologic            .  0  0  0  ½  0  .  ½  X  ½   1.5  25.5  3.75  7
>>> 10 Lokal-Matador         .  0  .  0  0  0  0  0  ½  X   0.5  25.0  0.75  7
>>>
>>>Congratulations to Christophe, Ed and Dieter!
>>>
>>>Greetings from Amsterdam,
>>>Theo van der Storm
>>
>>
>>Thanks!
>>
>>
>>    Christophe
>
>Hello Christophe,
>
>Congratulations from Berlin!
>
>I operated Gambit Tiger 14.6 in all games except the second round, and I was
>very impressed by the engine:  in the middle game it outsearched its opponents
>most of the time by 1, 2 or even 3 plies!  The effective branching factor
>consistently appeared to be not more than 2!  Wow!
>
>Obviously some sort of forward pruning is involved... but that is pure
>speculation, of course.  Any comments?  :-)


Yes, Tiger has always been what I call an "hyperselective" program.

It prunes forward and backward, like a beast! :)




>The loss against YaCE in round 4 looks like a book problem to me.  The first
>move out of book (8...O-O) had evaluation -0.48, and did not improve for
>quite some time.
>
>Still, a great performance!


Thanks!

And thanks for operating the program! I do not know where Tiger would be without
people like you, because as you know I live too far away to participate in any
tournament...



    Christophe



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