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Subject: Re: Interesting error by GambitFruit(Fruit 2.1 behaves the same)

Author: Bernhard Bauer

Date: 00:39:12 11/16/05

Go up one level in this thread


Are you shure that 1.Kh2 is good? What if black answers 1...Qg5?
I get a score of >3 for black. So white has probably to play 1.Rd1
loosing the exchange.
Kind regards
Bernhard


On November 15, 2005 at 13:43:14, Günther Simon wrote:

>On November 15, 2005 at 08:38:45, Enam wrote:
>
>Hi Enam,
>
>What hardware was used and was it ponder on or off?
>I am asking because I wonder about quite a lot moves
>played in 0.0 seconds despite the increment?
>(after book end and before tablebases of course and no
>forced moves)
>
>>Posting the games of GFruit 1.0 B2 . Thanks
>
>
>An interesting error played with 20 seconds!
>I could verify that Fruit 2.1 also needs quite long to avoid it
>and change to the correct Kh2 (late depth 11)
>[D] 63. Kg1?? {(Kh2) [%eval 0,9] [%emt 0:00:20]}
>
>[D]7r/6k1/1N3bp1/1pPp1q2/1P1P1p2/4nB1P/4Q1P1/4R2K w - - 0 63
>
>CPU0: GenuineIntel x86 Family 6 Model 8 Stepping 1 651 MHz
>GUI: Tablebases mit max. 5 Steinen gefunden! [Cache: 8 MB + intern 1.89 MB]
>Engine: Fruit 2.1 (128 MB)
>von Fabien Letouzey
>Stellung:  0 63
>
>7r/6k1/1N3bp1/1pPp1q2/1P1P1p2/4nB1P/4Q1P1/4R2K w - -
>
>Fruit 2.1
>  1/02	 0:00 	+0.92 	1.Dxb5 Lxd4 (3)
>  1/11	 0:00 	+1.13 	1.Da2 (121)
>  2/16	 0:00 	-0.26 	1.Da2 Txh3+ 2.Kg1 (775)
>  2/16	 0:00 	+0.27 	1.Dd2 Txh3+ 2.gxh3 Dxh3+ 3.Kg1 Dxf3 (980)
>  2/16	 0:00 	+1.06 	1.c6 Lxd4 2.Dxb5 (1.153)
>  2/16	 0:00 	+1.38 	1.Ta1 Lxd4 2.Ta7+ Kf6 3.Dxb5 (1.620)
>  3/16	 0:00 	+1.38 	1.Ta1 Lxd4 2.Ta7+ Kf6 3.Dxb5 (2.354)
>  4/16	 0:00 	+0.89 	1.Ta1 Lxd4 2.Ta7+ Kf6 3.Sd7+ Kg7 4.Dxb5 (5.535)
>  5/23	 0:00 	+0.90 	1.Ta1 Lxd4 2.Ta7+ Kf6 3.Sd7+ Kg5 4.De1 (21.792)
>  6/23	 0:00 	+0.62 	1.Ta1 Lxd4 2.Ta7+ Kf6 3.Kh2 De6 4.Dxb5 (57.699)
>  7/24	 0:00 	+0.42 	1.Ta1 Lxd4 2.Ta7+ Kf6 3.Kh2 Dg5 4.Sd7+ Kf7 5.Se5+ Ke6
>(156.505)
>  8/28	 0:02 	-1.60 	1.Ta1 Lxd4 2.Ta7+ Kf6 3.Df2 Db1+ 4.Dg1 Dxg1+ 5.Kxg1 Sc4+
>6.Kf1 Sxb6 7.cxb6 Lxb6 8.Ta2 (471.043) 186
>  8/28	 0:04 	-0.45 	1.Dd2 Txh3+ 2.Kg1 Th4 3.Dc3 Ld8 4.Kf2 Lxb6 5.cxb6 Th2
>6.Dc7+ Kg8 (846.623) 200
>  8/28	 0:05 	 0.00 	1.Kg1 Lxd4 2.Kh2 Dg5 3.Kh1 Df5 4.Kh2 (1.080.254) 201
>  9/28	 0:07 	 0.00 	1.Kg1 Lxd4 2.Kh2 Dg5 3.Kh1 Df5 4.Kh2 (1.484.207) 202
> 10/32	 0:12 	 0.00 	1.Kg1 Lxd4 2.Kh2 Dg5 3.Kh1 Df5 4.Kh2 (2.498.062) 205
> 11/42	 0:34 	-1.86 	1.Kg1 Lxd4 2.Dd2 Df6 3.Dd3 Sc2+ 4.Kf1 Sxe1 5.Kxe1 Lc3+
>6.Kf1 De5 7.De2 Dxe2+ 8.Kxe2 Te8+ 9.Kd3 Lxb4 10.Sxd5 Lxc5 11.Sxf4 (6.734.524)
>194
> 11/42	 0:39 	-1.02 	1.Dd2 Txh3+ 2.gxh3 Dxh3+ 3.Kg1 Dg3+ 4.Lg2 Sxg2 5.Te7+ Lxe7
>6.Dxg2 De1+ 7.Kh2 Lh4 8.Dxd5 Df2+ 9.Dg2 Dxd4 10.Db7+ Kh6 (7.911.689) 199
> 11/42	 0:54 	 0.00 	1.Kh2 Dg5 2.Kh1 Df5 (11.013.736) 203
>
>This means it would still need around 20 sec on a P4 2.2 Ghz machine
>
>Guenther
>



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