Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: perpetual check

Author: Miguel A. Ballicora

Date: 08:05:11 10/16/01

Go up one level in this thread


On October 16, 2001 at 07:58:15, Steffen Jakob wrote:

>Hi,
>
>this is a position from a blitz game Hossa - Sjeng:
>
>[D]7k/4QP2/7p/6rP/8/1K6/6r1/8 b
>
>For a human it's obvious that this is a draw. Hossa was rather clueless and
>thought that white was winning. Are there any engines which show a draw value at
>once (without significant search depth)?
>
>Greetings,
>Steffen.

My program Gaviota sees a draw in 6.4 seconds at depth 10 in a pIII 800mhz
16 Megabytes of hashtables.

Miguel

+-----------------+
| . . . . . . . k |
| . . . . Q o . . |
| . . . . . . . x |
| . . . . . . r o |
| . . . . . . . . |
| . K . . . . . . |
| . . . . . . r . |
| . . . . . . . . |
+-----------------+

analyze

     90760   7:      0.8    -0.23  Rg2-g3   Kb3-c4   Rg3-g4   Kc4-c3
                                   Rg4-g3   Kc3-c2   Rg3-g2   Kc2-c1
                                   Rg2-g1   Kc1-d2   Rg1-g2   Kd2-d3
                                   Rg2-g3   Kd3-d4   Rg3-g4   Kd4-e3
                                   Rg4-g3   Ke3-f2   Rg3-g2   Kf2-e3
    158000   8       1.4    -0.25  Rg2-g3   Kb3-c4   Rg3-g4   Kc4-c3
                                   Rg4-g3   Kc3-c2   Rg3-g2   Kc2-d3
                                   Rg5-g3   Kd3-c4   Rg3-g4   Kc4-d5
                                   Rg4-g5   Kd5-e4   Rg5-g4   Ke4-e5
                                   Rg2-e2   Ke5-d5   Re2-d2   Kd5-e5
    247119   8:      2.2    -0.25  Rg2-g3   Kb3-c4   Rg3-g4   Kc4-c3
                                   Rg4-g3   Kc3-c2   Rg3-g2   Kc2-d3
                                   Rg5-g3   Kd3-c4   Rg3-g4   Kc4-d5
                                   Rg4-g5   Kd5-e4   Rg5-g4   Ke4-e5
                                   Rg2-e2   Ke5-d5   Re2-d2   Kd5-e5
    371890   9       3.2    -0.21  Rg2-g3   Kb3-c4   Rg3-g4   Kc4-c3
                                   Rg4-g3   Kc3-c2   Rg3-g2   Kc2-d3
                                   Rg5-g3   Kd3-c4   Rg3-g4   Kc4-d5
                                   Rg4-g5   Kd5-e4   Rg5-g4   Ke4-e5
                                   Rg4-g5   Ke5-d4   Rg5-g4   Kd4-c3
                                   Rg4-g3   Kc3-b4   Rg3-g4   Kb4-b5
                                   Rg4-g5   Kb5-a4   Rg2-g4   Ka4-b3
    492206   9:      4.2    -0.21  Rg2-g3   Kb3-c4   Rg3-g4   Kc4-c3
                                   Rg4-g3   Kc3-c2   Rg3-g2   Kc2-d3
                                   Rg5-g3   Kd3-c4   Rg3-g4   Kc4-d5
                                   Rg4-g5   Kd5-e4   Rg5-g4   Ke4-e5
                                   Rg4-g5   Ke5-d4   Rg5-g4   Kd4-c3
                                   Rg4-g3   Kc3-b4   Rg3-g4   Kb4-b5
                                   Rg4-g5   Kb5-a4   Rg2-g4   Ka4-b3
    809212  10       6.4    +0.00  Rg2-g3   Kb3-c4   Rg3-g4   Kc4-c3
                                   Rg4-g3   Kc3-c2   Rg3-g2   Kc2-d3
                                   Rg2-g3   Kd3-e4   Rg3-g4   Ke4-f3
                                   Rg4-g3   Kf3-f2   Rg3-g2   Kf2-e3
                                   Rg2-g3   Ke3-d4   Rg3-g4   Kd4-d3
                                   Rg4-g3
    981102  10:      7.8    +0.00  Rg2-g3   Kb3-c4   Rg3-g4   Kc4-c3
                                   Rg4-g3   Kc3-c2   Rg3-g2   Kc2-d3
                                   Rg2-g3   Kd3-e4   Rg3-g4   Ke4-f3
                                   Rg4-g3   Kf3-f2   Rg3-g2   Kf2-e3
                                   Rg2-g3   Ke3-d4   Rg3-g4   Kd4-d3
                                   Rg4-g3



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.