Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Position from Leiden, Round 10

Author: Tony Werten

Date: 00:21:49 10/31/02

Go up one level in this thread


On October 30, 2002 at 16:40:30, Gerd Isenberg wrote:

>On October 30, 2002 at 16:33:43, Andreas Herrmann wrote:
>
>>On October 30, 2002 at 16:13:36, Gerd Isenberg wrote:
>>
>>>Position from Shark - IsiChessMMX, Leiden Round 10
>>>
>>>[D] r4rk1/2n1b1pN/pqb1p1Qp/1p6/P1p3n1/N1P1B3/1PB2PPP/R2R2K1 b - - ; bm Rxf2
>>>
>>>Even if the position is already won by black, finding the spectacular 24...Rxf2
>>>seems quite difficult for some engines. Ruffian is clearly the fastest i tried
>>>so far on my 2.1XP+ :
>>>
>>>Ruffian 1.0.0    2 seconds
>>>Shredder5       14 seconds
>>>IsiChessMMX     47 seconds
>>>
>>>May be a bad testposition due to Nxe3 wins too.
>>>
>>>Cheers,
>>>Gerd
>>
>>Hi Gerd,
>>
>>just tryd my current version of Holmes. I was surprised that Holmes plays also
>>Rxf2 after only 19 seconds on a AMD K6-2/450 Mhz.
>>
>>stat. eval: -0,07   (mat. balance: 0,00   pos. val: -0,07)
>>>1        -892        1        850 1. .. Nf6  {85kNs 0:00}
>>>1        -778        2       1217 1. .. Nxh2  {61kNs 0:00}
>>>1        -600        3       2096 1. .. Nxf2  {70kNs 0:00}
>>>1         183        5       3689 1. .. Nxe3  {74kNs 0:00}
>>>2         202        6       4274 1. .. Nxe3 2.fxe3 Qxe3+ 3.Kh1  {71kNs 0:00}
>>>3         175       10       6606 1. .. Nxe3 2.fxe3 Qxe3+ 3.Kh1 Rf2  {66kNs 0:00}
>>>4         181       23      18299 1. .. Nxe3 2.a5 Qc5 3.fxe3  {80kNs 0:00}
>>>5         201       41      38606 1. .. Nxe3 2.a5 Qc5 3.fxe3 Qxe3+ 4.Kh1  {94kNs 0:00}
>>>6         204      143     161459 1. .. Nxe3 2.fxe3 Qxe3+ 3.Kh1 Rf2 4.Rg1 Nd5 5.axb5  {113kNs 0:01}
>>>7         195      390     447037 1. .. Nxe3 2.a5 Qc5 3.fxe3 Qxe3+ 4.Kh1 Be8 5.Nxf8  {115kNs 0:03}
>>>7         287     1985    2652586 1. .. Rxf2 2.Nf6+ Bxf6 3.Qh7+ Kf8 4.Bxb6 Rxg2+ 5.Kf1 Nxh2+ 6.Ke1 Bh4+ 7.Bf2 Bxf2+ 8.Kd2  {134kNs 0:19}
>>>8         287     3254    4454205 1. .. Rxf2 2.Nf6+ Bxf6  {137kNs 0:32}
>>>9         287     6642    9447803 1. .. Rxf2 2.Nf6+ Bxf6 3.Qh7+ Kf8 4.Bxb6 Rxg2+ 5.Kf1 Nxh2+ 6.Ke1 Nf3+ 7.Kf1 Nh2+  {142kNs 1:06}
>>
>>have a nice day
>>Andreas
>
>Hi Andreas,
>that's great. Seems you made some progress with Holmes :-)
>May have a closer look what makes IsiChess so slow here.

My guess is your "check with king in the corner" code wich makes other moves
score better ?

Tony

>Any ideas about Paderborn or Leiden?
>Would be a fun to meet each other.
>
>have a nice day, too
>Gerd



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.