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Subject: Fruit UCI params and books testing (after 820 games)

Author: Marc Lacrosse

Date: 15:31:38 07/06/05


Hello all!

Here are the first results of a series of experiments that I am busy conducting
with Fruit 2.1

It is a series of 40 games engine matches between Fruit 2.1, DeepShreeder 9 UCI,
Chessmaster 10 and Ktulu 7a with various combinations of opening books and
engine parameters.

So far Fruit played either with :
- no opening book
- a medium size general book built from high quality correspondence games
("MLCB4003")
- fixed opening lines from my personal correspondence opening repertoire
("Nag09" book)

Fruit played either with default UCI parameters or with modified parameters.
So far I have tested a "ML02" personality.

Other engines played with the MLCB4003 book.

Ktulu and Shredder : default parameters
Chessmaster 10 : Berean 5.53
Other engines will be added

PentIV 2.2 Ghz 1024 MB ram or Centrino2 2Ghz 2048 MB ram
Winboard 4.2.7 + Polyglot 1.3 (+WB2UCI for CM10)
128 MB - no TB - ponder off
3 minutes base + 1'' per move

Preliminary results after 820 games :

    Program                    Elo    +   -   Games   Score   Av.Op.  Draws
  1 DS9UCI-Def-MLCB4003      : 2789   40  39   240    64.6 %   2685   25.0 %
  2 F21-ML02-MLCB4003        : 2726   37  37   240    54.4 %   2695   30.4 %
  3 F21-Def-MLCB4003         : 2710   37  36   240    51.7 %   2698   31.7 %
  4 F21-Def-Nag09            : 2695   37  37   240    49.2 %   2701   30.8 %
  5 CM10-Berean 553-MLCB4003 : 2672   38  38   240    45.4 %   2704   25.0 %
  6 K7a-Def-MLCB4003         : 2669   38  38   240    44.8 %   2705   26.2 %
  7 F21-Def-NoBook           : 2639   38  38   240    40.0 %   2710   28.3 %

Fruit21 ML02 personality is :

NullMove Pruning=Always
NullMove Reduction=3
Verification Search=always
Verification Reduction=5
History Pruning=true
History Threshold=100
Futility Pruning=false
Futility Margin=115
Delta Pruning=true
Delta Margin=80
Quiescence Check Plies=2
Material=96
Piece Activity=130
King Safety=90
Pawn Structure=110
Passed Pawns=120


Other results will follow ... as soon as achieved ...

Marc



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