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Old May 11th 08, 09:58 AM posted to rec.games.chess.computer
Peter Osterlund
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Posts: 122
Default Help Bot Advice adopted.

Martin Brown writes:

Sanny wrote:

That game was played by EASY level. Heres a game by Advance Level
where Zebediah gave lots of sacrifices and win the game in just 34
moves.

In this game Zebediah was a knight ahead but later sacrificed its
knight to bring a quick end.


You mean that Getclub gifted him a knight and then played like a
patzer. This play is basically insane. There is something wrong with
either the evaluation function or the search algorithm.


I think the quiescence search is either not implemented at all or
somehow broken. Just for fun, I played a game between GetClub (running
on a 2.4GHz Core2 CPU) and my mobile phone (I think it has a 400MHz
ARM CPU). I expected my phone to be tactically outplayed, but the
exact opposite happened. Here is the game:

[White "GetClub beginner level 10-20s/move"]
[Black "Glofiish X800, 15s/move"]
[Result "0-1"]

1. Nc3 d5 2. d4 Nf6 3. Bf4 e6 4. g3 Bb4 5. Bg2 Ne4 6. Bxe4 dxe4 7. e3 g5 8. Be5
O-O 9. g4 Nc6 10. Bg3 e5 11. d5 Ne7 12. Bxe5 Nxd5 13. Qe2 Re8 14. f4 exf3
15. Nxf3 Bxc3+ 16. bxc3 Bxg4 17. Bd4 c5 18. Bxc5 Nf4 19. Qf1 Qd5 20. Nxg5 Ng2+
21. Kf2 Qxc5 22. Kxg2 Qxg5 23. h4 Bf3+ 24. Kf2 Qxe3+ 25. Kg3 Bc6+ 26. Kh2 Qe5+
27. Kh3 Qe6+ 28. Kg3 Qd6+ 0-1

I guess that beginner level isn't intentionally making bad moves,
therefore my guess is a broken quiescence search.


Sanny writes:

6. e2-e4{104} Nf6-e4{1978}


And now the final coup de grace. Suicide chess anyone ???


No it gives 2 points for killing 2 Center pawns and other 1 point for
white King Comming out unprotected. and Look at White position its
none of the pieces is developed.


Why a whole point for the unprotected king? Wouldn't a smaller value,
like 0.25 be better?

Btw, is your evaluation function evaluating moves or positions?

--
Peter Osterlund -
http://web.telia.com/~u89404340
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