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Subject: Re: Opinion about a position?

Author: Vincent Lejeune

Date: 09:10:39 04/07/99

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On April 06, 1999 at 18:29:21, Christophe Theron wrote:

>On April 06, 1999 at 09:06:33, James Robertson wrote:
>
>>On April 06, 1999 at 02:10:11, Sarah Bird wrote:
>>
>>>On April 05, 1999 at 14:12:13, James Robertson wrote:
>>>
>>>>My program just played a game (40 moves in 20 min) against GNUChess (GNUChss was
>>>>black), and this position arose:
>>>>
>>>>1r4r1/2q2p1k/p6p/1pP1P2p/2bP3P/P1p1Q3/2P2RP1/5RK1 w - -
>>>>
>>>>GNUChess had just played Be6-c4 with a sizeable plus score for black. My program
>>>>responded with e6 with an about even score. What do other programs, especially
>>>>amateur ones, think about this?
>>>>
>>>>Thanks,
>>>>James
>>>>
>>>>My program's analysis:
>>>>
>>>> 1  -133         50         58 Rd1
>>>> 2  -133         50        341 Rd1 Qa5
>>>> 3  -127         50       3881 e6 Bxe6 Qxc3
>>>> 4  -128        160      11304 e6 Bxe6 Qd3+ Kg7 Qxc3
>>>> 5  -128        330      27324 e6 Bxe6 Qd3+ Kg7 Qxc3
>>>> 6   -78       1100     124186 e6 Bxe6 d5 Qg3 Qxg3 Rxg3 dxe6 fxe6
>>>> 7   -78       2360     281522 e6 Bxe6 d5 Qg3 Qxg3 Rxg3 dxe6 fxe6
>>>> 8   -78       7410     950243 e6 Bxe6 d5 Qg3 Qxg3 Rxg3 dxe6 fxe6
>>>> 9    -9      22190    2760318 e6 Bxe6 d5 Bd7 Rxf7+ Rg7 Qxc3 Rxf7 Rxf7+ Kg6
>>>>10    -9      67170    8712177 e6 Bxe6 d5 Bxd5 Qd3+ Kh8 Qxd5 Qe7 Qxh5 Kg7
>>>>11    33     216130   27175571 e6 Bxe6 d5 Bxd5 Qd3+ Rg6 Qxd5 f6 Rxf6 Rxf6 Rxf6
>>>
>>>
>>>Fritz 5.32
>>>1. e6....Bxe6
>>>2. d5....Bxd5
>>>3. Qd3+..Kh8
>>>4. Qxd5..Rbc8
>>>5. Rxf7..Qxc5+
>>>+(0.50) depth 15/37 00:25:31 381252kn
>>>248kN/s
>>>P200
>>>UltraB
>>
>>It is interesting that all the commercial programs and Crafty predicted 3. ...
>>Kh8, while Amateur and my program liked worse moves. Are there any amateur
>>programs that like 3. ... Kh8?

This position have a curious estimation by crafty (I don't remember the version)
: 3r4/1rq2p2/ppk1p1p1/3pP2p/PRpP4/Q1P3PP/2P2P1K/1R6 w
I test it with 3-4 commercial Fritz 5, Rebel 9, Genius 5 : they said around +.4
for white and crafty said around +0.0


>>
>>James
>
>Yes, Chess Tiger 11.8 from ply depth 7 sees (K6-2 300MHz, 8Mb hash):
>
>  e6 Bxe6 d5 Bxd5 Qd3+ Kh8 Qxd5 Rbd8 Qxh5 (score=+0.04, time 2.47s)
>
>At deeper depth the first 7 half moves (e6 to Qxd5) never change.
>
>
>    Christophe



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