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Subject: Re: Fritz7 or Shredder6 better for long (tournament) games?

Author: Christophe Theron

Date: 10:01:01 01/01/02

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On January 01, 2002 at 11:05:55, Eran wrote:

>Please see the following list that comes from the Rebel homepage below.
>
>RANKING after ROUND-12
>                       Tournament: Odyssey-2001
>Place    Name                          Sco      MBch Buch Ws
>-------------------------------------------------------------
>  1   SHREDDER5, (1)                   9.5       66   78½  7
>2-3   REBEL-CENTURY4, (10)             8.5       66   81   7
>      GAMBIT-TIGER14.6, (2)            8.5       63   77   6
>4-7   NIMZO8, (20)                     7.0       67½  81½  6
>      YACE BERLIN, (24)                7.0       65½  79   4
>      CRAFTY 18.12, (19)               7.0       61½  73½  6
>      GANDALF432H, (11)                7.0       61   74   5
>8-12  PHARAON 2.5, (12)                6.5       66   77   4
>      FRITZ7A, (8)                     6.5       65½  79½  4
>      CHESSMASTER8000 1.0.4., (6)      6.5       63½  74½  5
>      SHREDDER4 CHESSBITS, (5)         6.5       58   69   3
>      VIRTUAL-CHESS2, (7)              6.5       52   60½  5
>13-16 CHESS SYSTEM TAL2.03, (14)       6.0       56   69½  2
>      HIARCS7.01, (4)                  6.0       55½  65½  4
>      LITTLE-GOLIATH2000V3, (16)       6.0       55   63½  4
>      REBEL-TIGER14.6, (3)             6.0       55   63   3
>17-20 JUNIOR7, (9)                     5.5       68½  81½  3
>      PATZER311B, (17)                 5.5       67   80   3
>      MCHESS8, (23)                    5.5       63½  73½  4
>      GROMIT 3.8.1, (26)               5.5       58   68   3
>21    GENIUS6.5 CZUB-STYLE, (21)       5.0       58   68   3
>22-23 ZARKOV4.5T, (13)                 4.5       61   71½  3
>      WCHESS2000, (15)                 4.5       57½  67½  2
>  24  COMET B36, (18)                  4.0       56½  67½  3
>  25  SOCRATES X, (22)                 3.5       54   62½  3
>  26  EUGEN7.92, (25)                  1.5       55½  65½  0
>
>You see that Shredder5 is still on the first place so far and Fritz7a on the
>nineth place, how come?
>
>Eran



You still have to learn a lot about statistics and margin of errors...

Short story: there is too much randomness in a tournament like this one. You'd
better trust the SSDF list, where each program has played many many games before
it gets a rating.

If you don't believe it, run a "virtual" tournament where you decide the outcome
of the games by flipping a coin. All participants under these conditions should
be perfectly equal, but you will see one performing extremely well and the other
one performing extremely badly. How comes? Statistics...



    Christophe



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