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Subject: Re: Test Position:Extremely Hard:Avoid 15..hxg5(Takes over 19 hours forCM)

Author: Ernst Walet

Date: 00:37:53 11/22/03

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On November 21, 2003 at 17:13:49, ALI MIRAFZALI wrote:

>In the following interesting position it takes over 19 hours for Chessmaster
>9000 (default)on my 1.8 gig computer to avoid 15..hxg5 and choose 15..Rac8.
>It is my guess that Fritz and Junior will not solve this.
>[D]r2r2k1/ppq1bpp1/2bppn1p/6B1/3NPP1P/2N5/PPPQ2P1/1K1RR3 b
>Analysis by Chessmaster 9000(default Personality):
>Time	Depth	Score	Positions	Moves
>0:02	1/9	-1.38	356913		15...hxg5 16.hxg5 Ne8 17.g6 Bf6
>					18.Ncb5 Qd7 19.Nxc6 bxc6 20.gxf7+
>					Qxf7
>0:07	1/10	-1.23	1021400		15...hxg5 16.hxg5 Nd7 17.g6 Nc5
>					18.gxf7+ Kxf7 19.f5 e5 20.Nxc6
>					bxc6 21.Qe2
>0:28	2/11	-1.13	3883272		15...hxg5 16.hxg5 Nh7 17.g6 Nf6
>					18.gxf7+ Kxf7 19.f5 exf5 20.exf5
>					Kg8 21.Qe2 Re8
>1:03	3/12	-1.08	9118689		15...hxg5 16.hxg5 Ne8 17.Qe3 g6
>					18.Qh3 Bf8 19.f5 exf5 20.exf5 Bg7
>					21.Nxc6 bxc6 22.fxg6 fxg6
>2:53	4/13	-0.81	26353616	15...hxg5 16.hxg5 Ne8 17.Rh1 g6
>					18.Qd3 Bf8 19.f5 exf5 20.exf5 Bg7
>					21.fxg6 Bxg2 22.Rh7
>9:47	5/14	-0.59	96074807	15...hxg5 16.hxg5 Ne8 17.Rh1 g6
>					18.f5 exf5 19.exf5 Qa5 20.Nxc6
>					bxc6 21.fxg6 fxg6 22.Qd4 Ng7 23.Qc4+
>					d5 24.Qxc6
>41:24	6/15	-0.19	431783244	15...hxg5 16.hxg5 Ne8 17.Rh1 g6
>					18.f5 exf5 19.exf5 Qa5 20.Nxc6
>					bxc6 21.Qd4 Qe5 22.Qh4 Kf8 23.f6
>					Bxf6 24.gxf6 Nxf6
>9:17:20	7/16	0.20	1564966390	15...hxg5 16.hxg5 Nxe4 17.Nxe4
>					Bxe4 18.Rxe4 d5 19.Ree1 g6 20.g4
>					Rac8 21.Rh1 Bf8 22.f5 Re8 23.fxg6
>					fxg6 24.Qd3 Qg7 25.Qe3
>19:06:13	7/16	-0.29	3080132679	15...Rac8 16.g4 Nxg4 17.Rg1 h5
>					18.Rdf1 Bxg5 19.hxg5 e5 20.Nxc6
>					bxc6 21.Rh1 exf4 22.Qxf4 Ne5 23.Rxh5
>					Qa5
>Please indicate your result.


13 minutes 18 seconds on my AthlonXP @ 2200MHz, 1GB hash, TheKing 3.23 SKR
settings.

00:00:00.0	2.08	3001	808	hxg5 hxg5 Nd7 Rh1
00:00:00.0	2.12	4001	2492	hxg5 hxg5 Nd7 Ndb5
00:00:00.1	1.72	5001	11699	hxg5 hxg5 Nh5 g6 Be8 gxf7+ Bxf7
00:00:00.1	1.59	6001	24163	hxg5 hxg5 Nh5 g6 Be8 gxf7+ Bxf7 Nf3
00:00:00.4	1.50	7001	87782	hxg5 hxg5 Nd7 g6 Nf6 Nxc6 Qxc6 gxf7+ Kxf7
00:00:00.6	1.36	8001	147588	hxg5 hxg5 Ne8 f5 exf5 Nxf5 g6 Nxe7+ Qxe7 Nd5 Bxd5
exd5
00:00:01.5	1.34	9001	405441	hxg5 hxg5 Ne8 f5 exf5 Nxf5 g6 Nd5 Bxd5 Nh6+ Kf8 Qxd5
00:00:04.0	1.23	10001	1155003	hxg5 hxg5 Ne8 Rh1 Bf8 Qd3 g6 Ncb5 Bxb5 Nxb5 Qc5
00:00:10.6	0.97	11001	3185673	hxg5 hxg5 Nd7 g6 Nf6 gxf7+ Kxf7 f5 exf5 exf5 Kg8
Qe2 Re8
00:00:23.4	0.93	12001	7106734	hxg5 hxg5 Nd7 g6 Qa5 gxf7+ Kxf7 Qe2 Bf6 Ncb5 Bxd4
Nxd6+ Kg8 Rxd4 Nf6
00:02:15.7	0.51	13001	42926467	hxg5 hxg5 Ne8 Rh1 Bf8 Qd3 g6 f5 exf5 exf5 Bg7
fxg6 Bxg2 Rh7
00:05:07.2	0.10	14002	96712229	hxg5 hxg5 Ne8 Rh1 Bf8 g4 g6 Qh2 Bg7 Qh7+ Kf8 f5
exf5 gxf5 Qe7 f6 Nxf6 gxf6 Qxf6
00:13:17.9	0.23	14002	246777330	Qb6 f5 hxg5 fxe6 Nh7 exf7+ Kxf7 Rf1+ Kg8 Ne6
gxh4 Nxd8 Qxd8 Qd3 Nf6 Qc4+ Kh8 Rf5


Ernst.



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