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Subject: Re: Nice Game (Diep - Chezzz)

Author: David Rasmussen

Date: 15:03:14 02/03/03

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On February 03, 2003 at 16:05:54, John Merlino wrote:

>>
>>6... Ng4 is exactly Chezzz's first move out of book :)
>
>Time to add one or two more moves to the book, eh? :-)
>

Actually, I had just adjusted my book and my book code to use and hopefully
higher quality book moves, because I don't have any book learning or any other
ways of filtering bad moves. So it was "intentional". That Chezzz moved Ng4 was
not so fortunate if it is really a bad move. Then I'd rather improve my eval.

>>>21...Bf5 wins handily, according to Chessmaster 9000. The eval is more than 2
>>>points in Black's favor, whereas after Chezzz's 21...Bd7 the eval is almost one
>>>point less (although I'm sure Chezzz would be winning with either move).
>>>
>>
>>Chezzz finds it too, although it takes 4:30 :) And I don't think Chezzz thought
>>that long in the game. If Chessmaster finds it in much shorter time, I'm not
>>surprised. It is because it is a much stronger program generally, and
>>specifically a much more effecient searcher. Maybe it's even because of some
>>specific extension etc. ?
>
>CM9000, on a P3-733, finds Bf5 in 4 seconds, and the eval jumps nicely after 17
>seconds:
>
>Time	Depth	Score	Positions	Moves
>0:00	1/3	-0.17	6831		21...Bd7 22.Qb4 Qb6
>0:00	1/4	-0.35	18949		21...Bd7 22.Ne4 Qa8 23.Nec3
>0:01	1/5	-0.29	76005		21...Bd7 22.Qb4 Qb6 23.Ne4 Rfa8
>					24.Bb1
>0:02	1/6	-0.27	170837		21...Bd7 22.Bb1 Qb6 23.Rhe1 h6
>					24.Nf3 Bxb5 25.cxb5 Qxb5+ 26.Qb4
>0:04	1/6	-0.75	341155		21...Bf5 22.Bxf5 Qa8 23.Rxa1 bxa1=Q
>					24.Rxa1 Qxa1 25.Bd3 Ra8
>0:06	1/7	-0.75	478940		21...Bf5 22.Bxf5 Qa8 23.Rxa1 bxa1=Q
>					24.Rxa1 Qxa1 25.Bd3 Ra8
>0:17	1/8	-2.03	1382148		21...Bf5 22.Bxf5 Qa8 23.Rxa1 bxa1=Q
>					24.Rxa1 Qxa1 25.Ne6 fxe6 26.Bxe6+
>					Kh8 27.f4
>0:29	1/9	-2.12	2314538		21...Bf5 22.Bxf5 Qa8 23.Rxa1 bxa1=Q
>					24.Rxa1 Qxa1 25.Ne6 fxe6 26.Bxe6+
>					Kh8 27.f3
>1:11	1/10	-2.09	5848036		21...Bf5 22.Rxa1 bxa1=Q 23.Rxa1
>					Bxa1 24.Bxf5 gxf5 25.Qf4 h6 26.Nf3
>					Bg7 27.Qxf5 Qa5
>3:03	2/11	-2.40	15593005	21...Bf5 22.Rxa1 bxa1=Q 23.Rxa1
>					Bxa1 24.Bxf5 gxf5 25.Qf4 h6 26.Nf3
>					Bg7 27.Qxf5 Qa5 28.Qd7 Ra8
>
>jm

I wish I knew how it does that... :)

/David



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