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Subject: Re: Yes but you can help me to improve it ...

Author: Drexel,Michael

Date: 10:25:08 11/06/03

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On November 06, 2003 at 05:15:26, Dragon wrote:

>Yes it is bad results.
>
>Ruffian and El Chinito is certainly strongest programs.
>
>I am not a strong chess player and I have difficult
>to analyse the games of Dragon.
>
>Maybe you can help me and say to me what is for you
>the weakness of Dragon.
>
>Thank you,
>
>Bruno LUCAS (author of Dragon)

A main weakness of Dragon is certainly the endgame:

[D] 6k1/8/5p2/1R6/P2K3p/1P6/7r/8 w - - 0 41

This endgame should be still a draw, although white has better practical chances
because of two connected passed pawns.
+0.19 is not a good evaluation here (for example: Shredder +1.5 or Hiarcs +0.8).

Dragon defended this position bad and was lucky to get a draw.
White had a won tablebase ending later on.

[D] 4rk2/4b1pp/p4p2/1p1r4/8/5P2/PP3BPP/2R1R1K1 w - - 0 27

27.Bb6 was a very bad move in a drawish position (27.Rc2 for example).
Ruffian got two connected passed pawns and won easily.

[D] 2r5/5kp1/p3pn1p/2N1R3/1p4P1/7P/PPP5/7K w - - 0 29

Black is better but white should be able to draw the game after 29.Nxa6.
29.c4 +0.02 is not a good move with a completely wrong score.

Michael




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