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Subject: Re: positions to search deep for hours at 500 cpu's

Author: Drexel,Michael

Date: 10:37:34 09/20/03

Go up one level in this thread


On September 20, 2003 at 13:11:35, Dieter Buerssner wrote:

>On September 20, 2003 at 11:51:45, Dieter Buerssner wrote:
>
>>On September 20, 2003 at 03:49:13, Drexel,Michael wrote:
>>
>>>Can you explain that please? 89.Kd6 Bd3 90.Bg7+?? or 89.Kd6 Bg4 90.Bg7+??
>>
>>Oops, thank you for pointing this out. May likeley be a bug (or some stupidness
>>out of HT, but it really looks too stupid). I also used an experimental version.
>>I am trying to find it out (but because of the long thinking times, it might not
>>be trivial).
>
>It turned out to be a stupid operator error. I wanted to set EGTB-cache to 16
>MB. But I had set it to 16 bytes. This made TBs go crazy. Actually, I should
>already have been suspicious because of the too good nodes/s (over one million)
>in a position with many TB-accesses. Now it runs less than half that fast.
>
>Sorry for my nonsensical first post.
>
>Regards,
>Dieter


Yace Paderborn was not able to find the win at depth 25 here.
When I came back it searched only ~130 kN/s.

Michael

Kasparov,G - Karpov,A
5k2/4R3/2K3p1/4BbPn/8/8/8/8 w - - 0 1

Analysis by Yace Paderborn:

89.Kd6 Kg8 90.Kd5
  +-  (2.68)   Depth: 1   00:00:00
89.Kd6 Kg8 90.Kd5
  +-  (2.68)   Depth: 1   00:00:00
89.Kd6 Kg8 90.Kd5 Kf8 91.Bd6 Nf4+ 92.Kd4
  +-  (2.61)   Depth: 3   00:00:00
89.Kd6 Kg8 90.Kd5 Kf8 91.Bd6 Nf4+ 92.Kd4
  +-  (2.61)   Depth: 3   00:00:00
89.Kd6 Kg8 90.Kd5 Kf8 91.Bd6 Nf4+ 92.Kd4
  +-  (2.61)   Depth: 3   00:00:00
89.Kd6 Kg8 90.Kd5 Kf8 91.Bd6 Nf4+ 92.Kd4
  +-  (2.61)   Depth: 3   00:00:00
89.Kd6 Kg8 90.Kd5 Kf8 91.Bd6 Nf4+ 92.Kd4
  +-  (2.61)   Depth: 3   00:00:00
89.Kd6 Kg8 90.Kd5 Kf8 91.Bd6 Nf4+ 92.Kd4
  +-  (2.61)   Depth: 3   00:00:00
89.Kd6 Kg8 90.Kd5 Kf8 91.Bd6 Nf4+ 92.Kd4
  +-  (2.61)   Depth: 3   00:00:00
89.Kd6 Kg8 90.Kd5 Kf8 91.Bd6 Nf4+ 92.Kd4
  +-  (2.61)   Depth: 3   00:00:00
89.Kd6 Kg8 90.Kd5 Kf8 91.Bd6 Nf4+ 92.Kd4
  +-  (2.61)   Depth: 3   00:00:00
89.Kd6 Kg8 90.Kd5 Kf8 91.Bd6 Nf4+ 92.Kd4
  +-  (2.61)   Depth: 3   00:00:00
89.Kd6 Kg8 90.Kd5 Kf8 91.Bd6 Nf4+ 92.Kd4
  +-  (2.61)   Depth: 3   00:00:00
89.Kd6 Kg8 90.Kd5 Kf8 91.Bd6 Nf4+ 92.Kd4
  +-  (2.61)   Depth: 6/10   00:00:00
89.Kd6 Kg8 90.Kd5 Kf8 91.Bd6 Nf4+ 92.Kd4
  +-  (2.61)   Depth: 6/10   00:00:00
89.Kd6 Kg8 90.Kd5 Kf8 91.Bd6 Nf4+ 92.Kd4
  +-  (2.61)   Depth: 6/10   00:00:00
89.Kd6 Kg8 90.Kd5 Kf8 91.Bd6 Nf4+ 92.Kd4
  +-  (2.61)   Depth: 6/10   00:00:00
89.Kd6 Kg8 90.Kd5 Kf8 91.Bd6 Nf4+ 92.Kd4
  +-  (2.61)   Depth: 6/10   00:00:00
89.Kd6 Kg8 90.Kd5 Kf8 91.Bd6 Nf4+ 92.Kd4
  +-  (2.61)   Depth: 6/10   00:00:00
89.Kd6 Kg8 90.Kd5 Kf8 91.Bd6 Nf4+ 92.Kd4
  +-  (2.61)   Depth: 6/10   00:00:00  7kN
89.Kd6 Kg8 90.Kd5 Kf8 91.Bd6 Nf4+ 92.Kd4
  +-  (2.61)   Depth: 6/12   00:00:00  13kN
89.Kd6 Be4 90.Rh7 Ke8 91.Rc7 Kf8 92.Rd7
  +-  (2.56)   Depth: 7/12   00:00:00  33kN
89.Rc7 Bd3 90.Bd6+ Ke8 91.Re7+ Kd8 92.Kd5 Nf4+ 93.Ke5 Ng2
  +-  (2.57)   Depth: 7/12   00:00:00  38kN
89.Rc7 Bd3 90.Kd5 Ke8 91.Kd6 Kf8 92.Rh7 Ke8 93.Rc7 Kf8 94.Rh7 Ke8 95.Rc7
  +-  (2.60)   Depth: 7/12   00:00:00  47kN
89.Rc7 Bd3 90.Kd5 Ke8 91.Kd6 Kf8 92.Rh7 Ke8 93.Rc7 Kf8 94.Rh7 Ke8 95.Rc7
  +-  (2.60)   Depth: 7/16   00:00:00  54kN
89.Rc7 Ke8 90.Bd6 Bh3
  +-  (2.60)   Depth: 8/16   00:00:00  87kN
89.Rc7 Ke8 90.Bd6 Bh3
  +-  (2.60)   Depth: 8/16   00:00:00  102kN
89.Rc7 Ke8 90.Bd6 Be4+ 91.Kc5 Kd8 92.Kd4 Bg2 93.Rf7 Bc6
  +-  (2.56)   Depth: 9/16   00:00:00  135kN
89.Rc7 Ke8 90.Bd6 Be4+ 91.Kc5 Kd8 92.Kd4 Bg2 93.Rf7 Bc6
  +-  (2.56)   Depth: 9/17   00:00:00  171kN
89.Rc7 Ke8 90.Bd6 Be4+ 91.Kc5 Kd8 92.Kd4 Bg2 93.Rf7 Kc8 94.Re7
  +-  (2.62)   Depth: 10/17   00:00:00  281kN
89.Rc7 Ke8 90.Bd6 Be4+ 91.Kc5 Kd8 92.Kd4 Bg2 93.Rf7 Kc8 94.Re7
  +-  (2.62)   Depth: 10/22   00:00:00  367kN
89.Rc7 Ke8 90.Bd6 Be4+ 91.Kc5 Kd8 92.Kd4 Bg2 93.Be5 Ke8 94.Bd6 Kd8 95.Be5 Ke8
96.Bd6 Kd8
  +-  (2.62)   Depth: 11/22   00:00:00  473kN
89.Rc7 Ke8 90.Bd6 Be4+ 91.Kc5 Kd8 92.Kd4 Bg2 93.Be5 Ke8 94.Bd6 Kd8 95.Be5 Ke8
96.Bd6 Kd8
  +-  (2.62)   Depth: 11/22   00:00:01  606kN
89.Rc7 Bg4 90.Kc5 Ke8 91.Rh7 Bf3 92.Bd6 Kd8 93.Kd4 Bd1
  +-  (2.61)   Depth: 12/22   00:00:01  1178kN
89.Rh7 Bg4 90.Kc5 Ke8
  +-  (2.62)   Depth: 12/27   00:00:02  1418kN
89.Rh7 Bg4 90.Kc5
  +-  (2.62)   Depth: 12/27   00:00:02  1556kN
89.Rh7 Bg4 90.Kc5
  +-  (2.62)   Depth: 12/27   00:00:02  1759kN
89.Rh7 Kg8 90.Rc7 Kf8
  +-  (2.61)   Depth: 13/27   00:00:04  3284kN
89.Rc7 Bg4 90.Kc5 Ke8 91.Rh7 Bf3
  +-  (2.62)   Depth: 13/27   00:00:04  3431kN
89.Rc7 Bg4 90.Kc5
  +-  (2.62)   Depth: 13/27   00:00:04  3508kN
89.Rc7 Bg4 90.Kc5
  +-  (2.62)   Depth: 13/27   00:00:04  3794kN
89.Rc7 Be4+ 90.Kc5 Ke8
  +-  (2.61)   Depth: 14/27   00:00:07  5787kN
89.Rh7 Kg8 90.Rc7 Kf8 91.Kc5 Kg8
  +-  (2.62)   Depth: 14/28   00:00:07  6465kN
89.Rh7 Kg8 90.Rc7 Kf8 91.Kc5 Ke8 92.Bd6 Bd7 93.Be5 Ke7 94.Kd5 Ke8 95.Bd6
  +-  (2.62)   Depth: 14/28   00:00:08  7031kN
89.Rh7 Kg8 90.Rc7 Kf8 91.Kc5 Ke8 92.Bd6 Bd7 93.Be5 Ke7 94.Kd5 Ke8 95.Bd6
  +-  (2.62)   Depth: 14/28   00:00:09  7600kN
89.Rh7 Be4+ 90.Kc5 Ke8
  +-  (2.61)   Depth: 15/31   00:00:13  11017kN
89.Rc7 Be4+ 90.Kc5 Ke8 91.Kd4 Bf5 92.Rh7 Kd8 93.Kd5 Ke8
  +-  (2.62)   Depth: 15/31   00:00:15  12765kN
89.Rc7 Ke8 90.Kc5
  +-  (2.61)   Depth: 15/31   00:00:17  15198kN
89.Rh7 Be4+ 90.Kc5 Ke8
  +-  (2.61)   Depth: 15/31   00:00:18  15198kN
89.Rh7 Be4+ 90.Kc5 Ke8
  +-  (2.61)   Depth: 15/32   00:00:22  19028kN
89.Rh7 Be4+ 90.Kc5 Bf3 91.Bd6+ Kg8 92.Rc7 Ng7 93.Rc8+ Kh7 94.Be5 Bd1 95.Rc7 Ba4
  +-  (2.61)   Depth: 16/32   00:00:30  26421kN
89.Rc7 Ke8 90.Bd6 Kd8
  +-  (2.62)   Depth: 16/32   00:00:32  28207kN
89.Rc7 Ke8 90.Bd6 Kd8 91.Rh7 Be4+ 92.Kc5
  +-  (2.62)   Depth: 16/32   00:00:34  29539kN
89.Rc7 Ke8 90.Bd6 Kd8 91.Rh7 Be4+ 92.Kc5
  +-  (2.62)   Depth: 16/32   00:00:38  31922kN
89.Rc7 Ke8 90.Bd6 Kd8 91.Rh7 Be4+ 92.Kc5 Bf3 93.Kd4 Bg4 94.Be5 Bf5 95.Kd5 Bg4
96.Rh6 Bf5 97.Rh8+ Kd7 98.Rh7+ Ke8
  +-  (2.61)   Depth: 17/36   00:01:00  51138kN
89.Rh7 Be4+ 90.Kc5 Bf3 91.Bd6+ Kg8 92.Rc7 Ng7 93.Rc8+ Kh7 94.Be5 Bd1
  +-  (2.62)   Depth: 17/36   00:01:05  55799kN
89.Rh7 Bg4 90.Kc5 Kg8 91.Re7 Bd1 92.Kd4 Kf8 93.Rh7 Bg4 94.Bd6+ Kg8 95.Rh8+ Kxh8
96.Kc5
  +-  (2.61)   Depth: 17/36   00:01:19  68757kN
89.Rc7 Ke8 90.Bd6 Kd8 91.Rh7 Be4+ 92.Kc5 Bf3 93.Kd4 Bg4 94.Be5 Bf5 95.Kd5 Bg4
96.Rh6 Bf5 97.Rh8+ Kd7 98.Rh7+ Ke8
  +-  (2.61)   Depth: 17/36   00:01:19  68757kN
89.Rc7 Ke8 90.Bd6 Kd8 91.Rh7 Be4+ 92.Kc5 Bf3 93.Kd4 Bg4 94.Be5 Bf5 95.Kd5 Bg4
96.Rh6 Bf5 97.Rh8+ Kd7 98.Rh7+ Ke8
  +-  (2.61)   Depth: 17/38   00:01:39  88538kN
89.Rc7 Bg4 90.Kc5 Bf5
  +-  (2.61)   Depth: 18/38   00:02:06  112427kN
89.Rh7 Bg4 90.Kc5 Kg8 91.Re7 Bd1
  +-  (2.62)   Depth: 18/38   00:02:14  118735kN
89.Rh7 Kg8 90.Kc5
  +-  (2.61)   Depth: 18/38   00:02:31  134421kN
89.Rc7 Bg4 90.Kc5 Bf5
  +-  (2.61)   Depth: 18/38   00:02:31  134421kN
89.Rc7 Bg4 90.Kc5 Bf5
  +-  (2.61)   Depth: 18/38   00:02:34  137838kN
89.Rc7 Bg4 90.Kc5 Bf5 91.Bd6+ Kg8 92.Ra7 Bg4 93.Be5 Bf3 94.Kd6 Kf8 95.Re7 Kg8
96.Ke6 Bg4+ 97.Kd5 Bf3+ 98.Kd4 Bd1
  +-  (2.61)   Depth: 19/38   00:03:04  165185kN
89.Rh7 Kg8 90.Rh8+ Kf7 91.Kd6 Bg4 92.Rh7+ Kf8
  +-  (2.62)   Depth: 19/38   00:03:24  182902kN
89.Rh7 Kg8 90.Rh8+ Kf7 91.Kd6 Bg4 92.Rh7+ Kf8 93.Kc7 Bf5 94.Kc6 Kg8 95.Rh8+ Kf7
96.Kd6 Bg4 97.Rh7+ Kf8 98.Kc7 Bf5 99.Kc6
  +-  (2.62)   Depth: 19/39   00:04:12  221374kN
89.Rh7 Kg8 90.Rh8+ Kf7 91.Kd6 Bg4 92.Rh7+ Kf8 93.Kc7 Bf5 94.Kc6 Kg8 95.Rh8+ Kf7
96.Kd6 Bg4 97.Rh7+ Kf8 98.Kc7 Bf5 99.Kc6
  +-  (2.62)   Depth: 19/39   00:04:17  226224kN
89.Rh7 Kg8 90.Rh8+ Kf7 91.Kd6 Be4 92.Rh7+ Kf8
  +-  (2.61)   Depth: 20/41   00:07:32  396828kN
89.Rc7 Bg4 90.Kc5 Bf5
  +-  (2.62)   Depth: 20/41   00:08:07  429320kN
89.Rc7 Bh3 90.Kc5
  +-  (2.61)   Depth: 20/41   00:09:53  530413kN
89.Rh7 Kg8 90.Rh8+ Kf7 91.Kd6 Be4 92.Rh7+ Kf8
  +-  (2.61)   Depth: 20/41   00:09:53  530413kN
89.Ra7 Be4+ 90.Kd7 Kf7 91.Kd6+ Kf8 92.Ke6 Bf5+ 93.Kd5 Bg4 94.Bd6+ Kg8 95.Ra8+
Kf7 96.Rf8+ Kg7
  +-  (2.62)   Depth: 20/42   00:14:43  799890kN
89.Ra7 Bg4 90.Bd6+ Kg8 91.Kd5
  +-  (2.61)   Depth: 20/42   00:16:10  874316kN
89.Rh7 Kg8 90.Rh8+ Kf7 91.Kd6 Be4 92.Rh7+ Kf8
  +-  (2.61)   Depth: 20/42   00:16:10  874316kN
89.Rh7 Kg8 90.Rh8+ Kf7 91.Kd6 Be4 92.Rh7+ Kf8
  +-  (2.61)   Depth: 20/42   00:16:15  879199kN
89.Rh7 Kg8 90.Rh8+ Kf7 91.Kd6 Bg4 92.Rb8 Bf3 93.Rb6 Be4 94.Rb3 Bf5 95.Rb7+ Kf8
96.Re7
  +-  (2.62)   Depth: 21/42   00:19:51  1079607kN
89.Rh7 Kg8 90.Rh8+ Kf7 91.Kd6 Bg4 92.Rb8 Bf3 93.Rb6 Be4 94.Rb3 Bf5 95.Rb7+ Kf8
96.Re7
  +-  (2.62)   Depth: 21/42   00:21:18  1148136kN
89.Rh7 Kg8 90.Rh8+ Kf7 91.Kd6 Bg4 92.Rb8 Bf3 93.Rb6 Be4 94.Rb3 Bf5 95.Rb7+ Kf8
96.Re7 Bg4 97.Rh7 Kg8 98.Ra7 Kf8 99.Re7 Bh3 100.Rh7 Kg8 101.Ra7 Kf8
  +-  (2.62)   Depth: 22/42   00:26:33  1383979kN
89.Rh7 Kg8 90.Rh8+ Kf7 91.Kd6 Bg4 92.Rb8 Bf3 93.Rb6 Be4 94.Rb3 Bf5 95.Rb7+ Kf8
96.Re7 Bg4 97.Rh7 Kg8 98.Ra7 Kf8 99.Re7 Bh3 100.Rh7 Kg8 101.Ra7 Kf8
  +-  (2.62)   Depth: 22/42   00:30:38  1552105kN
89.Rh7 Kg8 90.Ra7 Bg4 91.Kd6 Kf8 92.Rh7 Kg8 93.Ke7 Kxh7 94.Bg3
  +-  (2.63)   Depth: 23/44   00:43:19  2074899kN
89.Rh7 Kg8 90.Ra7 Bg4 91.Kd6 Kf8 92.Rh7 Kg8 93.Ke7 Kxh7 94.Bg3
  +-  (2.63)   Depth: 23/44   00:49:36  2305071kN
89.Rh7 Kg8 90.Ra7 Bg4 91.Kd6 Kf8 92.Ra8+ Kf7 93.Ra4
  +-  (2.63)   Depth: 24/50   01:24:56  3834350kN
89.Rh7 Kg8 90.Ra7 Bg4 91.Kd6 Kf8 92.Ra8+ Kf7 93.Ra4 Bf5 94.Kc7
  +-  (2.63)   Depth: 24/50   01:51:00  505476kN
89.Rh7 Kg8 90.Ra7 Bg4 91.Kd6 Kf8 92.Ra8+ Kf7 93.Ra2 Bf5 94.Ra4
  +-  (2.64)   Depth: 25/54   03:50:09  1702137kN
89.Rh7 Kg8 90.Ra7 Bg4 91.Kd6 Kf8 92.Ra8+ Kf7 93.Ra2 Bf5 94.Ra4
  +-  (2.64)   Depth: 25/54   04:22:21  2767258kN

(,  20.09.2003)



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