Computer Chess Club Archives


Search

Terms

Messages

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

Author: Dann Corbit

Date: 14:18:46 11/21/03

Go up one level in this thread


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.


950 MHz Athlon:

E:\crafty>Crafty-Smp-1905.exe

Initializing multiple threads.
System is SMP, not NUMA.
EPD Kit revision date: 1996.04.21
unable to open book file [./book.bin].
book is disabled
unable to open book file [./books.bin].
hash table memory =  192M bytes.
pawn hash table memory =   12M bytes.
EGTB cache memory =   64M bytes.
draw score set to    0.00 pawns.
book file enabled.
choose from book moves randomly (using weights.)
choose from 5 best moves.
book learning enabled
result learning enabled
position learning enabled
threshold set to 9 pawns.
0 piece tablebase files found
EGTB access enabled
using tbpath=e:\crafty\release\tb
0 piece tablebase files found

Crafty v19.5 (1 cpus)

White(1): hash 256M
hash table memory =  192M bytes.
White(1): epdpfga \rac8.epd rac8.out
PFGA: EPD record: 1
middle-game phase
              trojan check enabled
              clearing hash tables
              time surplus   0.00  time limit 22.50 (3:30)
              depth   time  score   variation (1)
                5     0.33   0.28   1. ... d5 2. e5 Ne4 3. Nxe4 dxe4 4.
                                    Bxe7 Qxe7 5. Nxc6 bxc6
                5->   0.40   0.28   1. ... d5 2. e5 Ne4 3. Nxe4 dxe4 4.
                                    Bxe7 Qxe7 5. Nxc6 bxc6
                6     0.81   0.52   1. ... d5 2. exd5 Nxd5 3. Nxc6 bxc6
                                    4. Bxe7 Qxe7 5. h5 Nxc3+ 6. Qxc3 Rxd1+
                                    7. Rxd1
                6     0.98   0.25   1. ... Rac8 2. f5 e5 3. Nxc6 Qxc6 4.
                                    g4 Qc4
                6->   1.28   0.25   1. ... Rac8 2. f5 e5 3. Nxc6 Qxc6 4.
                                    g4 Qc4
                7     1.54   0.37   1. ... Rac8 2. f5 e5 3. Nxc6 Qxc6 4.
                                    Qf2 Qc5 5. Qg3
                7->   2.66   0.37   1. ... Rac8 2. f5 e5 3. Nxc6 Qxc6 4.
                                    Qf2 Qc5 5. Qg3
                8     3.58   0.31   1. ... Rac8 2. f5 e5 3. Nxc6 Qxc6 4.
                                    Qf2 a6 5. Qg3 b5
                8->   5.83   0.31   1. ... Rac8 2. f5 e5 3. Nxc6 Qxc6 4.
                                    Qf2 a6 5. Qg3 b5
                9     8.28   0.43   1. ... Rac8 2. f5 e5 3. Nxc6 bxc6 4.
                                    Qf2 Qb7 5. Qg3 Rb8 6. b3
                9    18.95   0.42   1. ... d5 2. e5 Ne4 3. Nxe4 dxe4 4.
                                    Qe2 Bxg5 5. hxg5 Rac8 6. g6 Bd5 7.
                                    gxf7+ Kxf7
              time=22.52  cpu=96%  mat=0  n=9918544  fh=86%  nps=440k
              ext-> chk=45535 cap=33588 pp=2724 1rep=3909 mate=40
              predicted=0  nodes=9918544  evals=3742770
              endgame tablebase-> probes=0  hits=0
              SMP->  split=0  stop=0  data=0/4096  cpu=21.67  elap=22.52



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.