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Subject: Re: test position -> The King : 18 sec !!!!

Author: Tom Brake

Date: 10:13:07 08/19/04

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On August 19, 2004 at 12:52:35, Vincent Lejeune wrote:

>On August 19, 2004 at 12:07:10, Uri Blass wrote:
>
>>On August 19, 2004 at 09:40:17, Vincent Lejeune wrote:
>>
>>>On August 19, 2004 at 06:57:16, Uri Blass wrote:
>>>
>>>>Fritz8 needs a very long time to find a known combination that was played by a
>>>>19 year old player in 1929(neidorf sorry if I mispell his name)
>>>>
>>>>A3000 512 mbytes hash
>>>>
>>>>New game
>>>>[D]r1b2rk1/pp1n2pp/2p1p3/3p1pNq/2PP1Pn1/3BP1P1/PP2N1Kb/R1BQ1R2 b - - 0 1
>>>
>>>10 min 39 sec for Shredder 8 on a Centrino 1.7 Ghz with 96 MB hash
>>>
>>>Analysis by Shredder 8:
>[snip]
>>>  -+  (-1.61)   Profondeur: 18/45   00:09:00  227555kN
>>>1...Fg1 2.Cxg1 Dh2+ 3.Rf3 e5 4.fxe5 Cgxe5+ 5.dxe5 Cxe5+ 6.Rf4 Cg6+ 7.Rf3 f4
>>>8.cxd5 Fg4+ 9.Re4 Fxd1 10.exf4
>>>  -+  (-1.62)   Profondeur: 18/49   00:10:39  270392kN
>>>1...Fg1 2.Cxg1 Dh2+ 3.Rf3 e5 4.fxe5 Cgxe5+ 5.dxe5 Cxe5+ 6.Rf4 Cg6+ 7.Rf3 f4
>>>8.cxd5 Fg4+ 9.Re4 Fxd1 10.exf4 Dxg3 11.Txd1 cxd5+ 12.Rxd5 Cxf4+ 13.Fxf4 Dxf4
>>>14.Cxh7 Tad8+ 15.Re6 b6
>>>  -+  (-1.97)   Profondeur: 18/54   00:10:59  278849kN
>>>1...Fg1 2.Cf3 Fxe3 3.Th1 De8 4.Db3 Cdf6 5.c5 De7 6.Tf1 Fxc1
>>>  -+  (-2.18)   Profondeur: 18/60   01:08:21  1682962kN
>>
>>
>>surprisingly it seems that my stupid engine with 64 mbytes hash is even faster
>>than shredder8
>>
>>analysis by movei
>>13 78 9818 58094801 d7f6 f1h1 f6e4 g5h3 h5h3 g2h3 e4f2 h3g2 f2d1 h1d1 d5c4 d3c4
>>b7b5 c4d3 c8d7 c1d2
>>13 78 16209 96719506 d7f6 f1h1 f6e4 g5h3 h5h3 g2h3 e4f2 h3g2 f2d1 h1d1 d5c4 d3c4
>>b7b5 c4d3 c8d7 c1d2
>>14 79 21146 126051576 d7f6 f1h1 f6e4 g5h3 f8f6 d3e4 f6h6 h3g5 f5e4 e2c3 c8d7
>>d1b3 b7b6 c1d2
>>14 80 40337 242656573 h2g1
>>14 109 45581 273565382 h2g1
>>14 170 75812 452747576 h2g1 g5f3 g1e3 f1h1 h5g6 d1b3 d5c4 d3c4 d7b6 f3e5 g4e5
>>f4e5 f5f4 c1e3 f4e3
>>14 170 76167 454958876 h2g1 g5f3 g1e3 f1h1 h5g6 d1b3 d5c4 d3c4 d7b6 f3e5 g4e5
>>f4e5 f5f4 c1e3 f4e3
>>
>>Uri
>
>
>The king show his high tactical ability : The King 3.33(sel.search=16), AMD
>barton@3000+ , 64 MB hash
>
>Time	Depth	Score	Positions	Moves
>0:03	1/8	-0.72	860022		1...dxc4 2.Bxc4 Nb6 3.Bb3 Nd5 4.Qd3
>					Bd7 5.Bd2 Rad8
>0:08	1/9	-0.48	2243732		1...dxc4 2.Bxc4 Nb6 3.Bb3 Nd5 4.Qd3
>					a5 5.Nc3 a4 6.Nxa4
>0:18	1/9	-1.07	5029704		1...Bg1 2.Nf3 Bxe3 3.Rh1 Qg6 4.Qb3
>					Ndf6 5.Bxe3 Nxe3+ 6.Kg1 dxc4 7.Bxc4
>					Nxc4 8.Qxc4
>0:24	1/10	-1.05	6704236		1...Bg1 2.Nf3 Bxe3 3.Rh1 Qg6 4.Qb3
>					Ndf6 5.Bxf5 exf5 6.Bxe3 dxc4 7.Qxc4+
>					Nd5
>0:47	1/11	-0.99	13655858	1...Bg1 2.Nf3 Bxe3 3.Rh1 Nf2 4.Rxh5
>					Nxd1 5.Nc3 Bxc1 6.Nxd1 Nf6 7.Rh1
>					dxc4 8.Bxc4
>1:45	1/12	-1.06	30415992	1...Bg1 2.Nf3 Bxe3 3.Rh1 Qg6 4.Qb3
>					c5 5.cxd5 cxd4 6.Nh4 Qe8 7.dxe6 Nc5
>4:39	1/13	-1.06	77767754	1...Bg1 2.Nf3 Bxe3 3.Rh1 Qe8 4.Qb3
>					c5 5.cxd5 cxd4 6.Bb5 Nc5 7.Qc4
>					Qe7 8.Nexd4

Same results here. I like to how The King and I think movei earlier avoid 2.
Nxg1



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