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Subject: Re: test position

Author: Vincent Lejeune

Date: 09:18:04 08/19/04

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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:
>>...
>>1...Cdf6 2.Th1 Fd7 3.Ch3 dxc4 4.Fxc4 Cxe3+ 5.Fxe3 Cd5 6.Rxh2 Dxh3+ 7.Rxh3
>>  -+  (-1.44)   Profondeur: 10/26   00:00:00  423kN
>>1...Cdf6 2.Th1 Ce4 3.Ch3 Dxh3+ 4.Rxh3 Cef2+ 5.Rg2 Cxd3
>>  µ  (-1.39)   Profondeur: 10/26   00:00:01  515kN
>>1...Te8 2.cxd5 exd5 3.Th1 c5 4.Fxf5 Cdf6 5.Fxh7+ Cxh7 6.Cf3
>>  µ  (-1.40)   Profondeur: 10/27   00:00:01  645kN
>>1...Te8 2.Fd2 dxc4 3.Fxc4 Cb6 4.Fd3 Cd5 5.Th1 Cdxe3+ 6.Fxe3 Cxe3+ 7.Rf2
>>  -+  (-1.61)   Profondeur: 10/27   00:00:01  779kN
>>1...dxc4 2.Fxc4 Cb6 3.Fb3 Cd5 4.Dd3 Cb4 5.Dd1 Te8 6.Dd3 Cxd3 7.Fxe6+ Fxe6
>>  -+  (-1.62)   Profondeur: 10/27   00:00:01  808kN
>>1...dxc4 2.Fxc4 Cb6 3.Fb3 Cd5 4.Dd3 Cb4 5.Dd1 Te8 6.e4 fxe4 7.Cxe4
>>  -+  (-1.66)   Profondeur: 10/27   00:00:02  851kN
>>1...dxc4 2.Fxc4 Cb6 3.Fb3 Cd5 4.Dd3 Cb4 5.Dc3 Fd7 6.Dxb4 Dh3+ 7.Rxh3
>>  -+  (-1.41)   Profondeur: 11/25   00:00:02  1071kN
>>1...dxc4 2.Fxc4 Cb6 3.Fb3 Cd5 4.Dd3 Fd7 5.Fd2 Tad8 6.e4 fxe4 7.Dxe4 Tf5 8.Cxe6
>>  µ  (-1.29)   Profondeur: 11/29   00:00:02  1176kN
>>1...Cdf6 2.Th1
>>  µ  (-1.30)   Profondeur: 11/29   00:00:02  1199kN
>>1...Cdf6 2.Th1 dxc4 3.Fxc4 Ce4 4.Cxe4 fxe4 5.Fd2 Cf2 6.Dc1 Df3+ 7.Rxh2 Txf4
>>8.exf4 Dxh1+ 9.Dxh1
>>  µ  (-1.30)   Profondeur: 11/29   00:00:03  1339kN
>>1...Te8 2.Fd2
>>  µ  (-1.31)   Profondeur: 11/29   00:00:03  1421kN
>>1...Te8 2.cxd5 exd5 3.Th1 c5 4.Fxf5 Cdf6 5.Fxg4 Fxg4 6.Txh2 Fxe2 7.Txh5 Fxd1
>>  µ  (-1.39)   Profondeur: 11/29   00:00:04  1923kN
>>1...Te8 2.Th1 dxc4 3.Fxc4 Cb6 4.Fb3 Cd5 5.Dd3 h6 6.Cf3 Fxg3 7.Txh5 Cgxe3+ 8.Fxe3
>>  µ  (-1.14)   Profondeur: 12/30   00:00:09  3972kN
>>1...Te8 2.Th1 dxc4 3.Fxc4 Cb6 4.Fb3 a5 5.Cf3 a4 6.Cxh2 axb3 7.Cf3 Dg6 8.Dxb3
>>  µ  (-0.86)   Profondeur: 12/30   00:00:10  4300kN
>>1...Cdf6 2.Th1 Ce4 3.Ch3 Tf6 4.Fxe4 Th6 5.cxd5 fxe4 6.Cf2
>>  µ  (-0.87)   Profondeur: 12/30   00:00:11  4549kN
>>1...Cdf6 2.Th1 c5 3.Cf3 dxc4 4.dxc5 cxd3 5.Txh2 dxe2 6.Fd2
>>  µ  (-1.22)   Profondeur: 12/30   00:00:12  5015kN
>>1...Cdf6 2.Th1 c5 3.dxc5 dxc4 4.Fxc4 Fd7 5.Fxe6+ Fxe6 6.Cxe6 Dh3+ 7.Rxh3 Cf2+
>>8.Rxh2 C2g4+ 9.Rg2
>>  µ  (-1.22)   Profondeur: 12/31   00:00:12  5285kN
>>1...dxc4 2.Fxc4 Cb6 3.Fb3 Cd5 4.Dd3
>>  µ  (-1.23)   Profondeur: 12/31   00:00:12  5316kN
>>1...dxc4 2.Fxc4 Cb6 3.Fb3 Cd5 4.Dd3 Cdxe3+ 5.Fxe3 Fxg3 6.Cxg3 Dh1+ 7.Txh1 Cxe3+
>>8.Dxe3
>>  µ  (-1.23)   Profondeur: 12/31   00:00:14  5764kN
>>1...dxc4 2.Fxc4 Cb6 3.Fb3 Cd5 4.Fxd5 exd5 5.Th1 c5 6.Cf3 cxd4 7.Cxh2 Dh3+ 8.Rxh3
>>  µ  (-0.98)   Profondeur: 13/36   00:00:19  8162kN
>>1...dxc4 2.Fxc4 Cb6 3.Fb3 Tf6 4.Dd3 Fd7 5.Th1 c5 6.e4 Fc6 7.Txh2 Dxh2+ 8.Rf3
>>fxe4+ 9.Rxg4 exd3
>>  µ  (-0.98)   Profondeur: 13/36   00:00:21  8754kN
>>1...Cdf6 2.Th1 c5 3.dxc5 Fd7 4.Cf3 Fc6 5.Ced4 dxc4 6.Fxc4 Cd5 7.Cxf5 Txf5
>>  µ  (-0.99)   Profondeur: 13/36   00:00:22  9264kN
>>1...Cdf6 2.Th1 c5 3.dxc5 Fd7 4.Cf3 Fc6 5.Ced4 dxc4 6.Fxc4 Fd5 7.Cxe6 Dh3+
>>  µ  (-0.99)   Profondeur: 13/36   00:00:23  9637kN
>>1...Tf6 2.Fd2 dxc4 3.Fxc4 Cb6 4.Fd3 Cd5 5.Dc1 Th6 6.e4 fxe4 7.Dc5 exd3
>>  µ  (-1.00)   Profondeur: 13/36   00:00:23  9812kN
>>1...Tf6 2.cxd5 exd5 3.Th1 Cb6 4.Cf3 Fd7 5.Cxh2 Dh3+ 6.Rxh3 Th6+ 7.Rg2 Cxh2
>>8.Txh2 Txh2+ 9.Rxh2 Rh8
>>  µ  (-1.00)   Profondeur: 13/36   00:00:26  10962kN
>>1...Tf6 2.cxd5 exd5 3.Th1 Cb6 4.Cf3 Fd7 5.Cxh2 Dh3+ 6.Rxh3 Th6+ 7.Rg2 Txh2+
>>8.Txh2 Cxe3+ 9.Fxe3
>>  µ  (-0.75)   Profondeur: 14/36   00:00:33  14063kN
>>1...Tf6 2.cxd5 exd5 3.Th1 Cb6 4.Cf3 Fd7 5.Cxh2 Dh3+ 6.Rxh3 Th6+ 7.Rg2 Txh2+
>>8.Txh2 Cxe3+ 9.Fxe3
>>  =  (-0.25)   Profondeur: 14/39   00:00:36  15615kN
>>1...Tf6 2.cxd5 exd5 3.Th1 Cf8 4.Cg1 Th6 5.Fe2 Ce6 6.C5f3 Cf2 7.Ch4 Cxd1 8.Cxf5
>>Dxf5
>>  =  (-0.25)   Profondeur: 14/39   00:00:39  16681kN
>>1...Te8 2.Th1 dxc4 3.Fxc4 Cb6 4.Fb3 a5 5.Cf3 a4 6.Cxh2 axb3 7.Cg1
>>  ³  (-0.26)   Profondeur: 14/39   00:00:41  17385kN
>>1...Te8 2.Th1 dxc4 3.Fxc4 Cb6 4.Fb3 a5 5.Cf3 a4 6.Cxh2 axb3 7.Cg1 Txa2 8.Dxb3
>>Txa1 9.Dxe6+ Txe6
>>  ³  (-0.61)   Profondeur: 14/39   00:00:42  17994kN
>>1...Te8 2.Th1 dxc4 3.Fxc4 Cb6 4.Fb3 a5 5.Cf3 a4 6.Cxh2 axb3 7.Cf3 Dg6 8.Dxb3 Cd5
>>9.Fd2
>>  ³  (-0.67)   Profondeur: 14/39   00:00:47  19871kN
>>1...dxc4 2.Fxc4 Cb6 3.Fb3 Tf6 4.Dd3
>>  ³  (-0.68)   Profondeur: 14/39   00:00:48  20046kN
>>1...dxc4 2.Fxc4 Cb6 3.Fb3 a5 4.Cxe6 a4 5.Cxf8+ axb3 6.Dxb3+ Cd5 7.Cc3 Rxf8
>>8.Cxd5 cxd5 9.Dxd5 Dh3+
>>  µ  (-0.81)   Profondeur: 14/39   00:00:57  23911kN
>>1...Cdf6 2.Th1 c5 3.dxc5 Td8 4.Cd4 Ce4 5.Cxe4 fxe4 6.Fe2 e5 7.cxd5 exd4 8.Fxg4
>>Fxg4
>>  µ  (-0.82)   Profondeur: 14/39   00:00:59  24450kN
>>1...Cdf6 2.Th1 dxc4 3.Fxc4 b5 4.Fb3 c5 5.Cxe6 Fb7+ 6.d5 c4 7.Cxf8 Fxd5+ 8.Rf1
>>Fxh1 9.Fxc4+ bxc4 10.Dd5+ Cxd5
>>  µ  (-1.17)   Profondeur: 14/39   00:01:00  25061kN
>>1...Cdf6 2.Th1 dxc4 3.Fxc4 b5 4.Fb3 c5 5.Fxe6+ Fxe6 6.Cxe6 Cd5 7.Db3 Cgxe3+
>>8.Rf2
>>  -+  (-1.45)   Profondeur: 14/39   00:01:02  25840kN
>>1...Cdf6 2.Cf3 c5 3.Db3 b6 4.dxc5 Ce4 5.c6 Cc5 6.Da3 Fa6 7.Fd2 Dh3+ 8.Rxh3 Cf2+
>>9.Txf2
>>  µ  (-1.21)   Profondeur: 15/38   00:01:37  40533kN
>>1...Cdf6 2.Cf3 c5 3.Db3 b6 4.dxc5 Ce4 5.c6 Fa6 6.Dc2 Cc5 7.b3 Tad8 8.Fd2
>>  µ  (-1.19)   Profondeur: 16/37   00:02:20  57887kN
>>1...Cdf6 2.Cf3 dxc4 3.Fxc4 b5 4.Fb3 Ce4 5.Dc2 Fb7 6.Fxe6+ Rh8 7.a4 Tf6 8.Fxf5
>>Dxf5 9.Cxh2 Cxh2 10.Dc5
>>  µ  (-1.37)   Profondeur: 17/38   00:04:06  101855kN
>>1...Cdf6 2.cxd5 Cxd5 3.Tf3 Fd7 4.Fd2 h6 5.Ch3 c5 6.e4 Cdf6 7.Te3 Cxe3+ 8.Fxe3
>>fxe4
>>  -+  (-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


this position seems a bit special : the best move change 10 times between 1st
and 60th second ...




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