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Subject: Re: a test position for chess programs(fritz could not solve it in a game)

Author: James T. Walker

Date: 04:37:37 04/03/00

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On April 02, 2000 at 17:00:12, Ernst Walet wrote:

>Let´s be honest, it takes H7.32 almost 27 minutes to see Kc2 (P3-450, 80MB hash,
>4-man TB)

What do you mean by the "Let's be honest" remark?  The analysis I posted is
similiar to yours except I only showed it going back to Kb2.  I did not take it
until it goes back to Kc2 again.  My Hiarcs took only 31 seconds to go back to
Kc2 while yours took over 1 minute.  I wondering what about my post is not
honest?
Jim Walker


>New position
>6Q1/8/8/8/1p2p2P/1k6/5PK1/q7 b - - 0 1
>
>Analysis by Hiarcs 7.32:
>
>1...Kb2 2.Qh8+ Kb1 3.Qxa1+ Kxa1
>  =  (0.24)   Depth: 1   00:00:00
>1...Kb2 2.Qh8+ Kb1 3.Qxa1+ Kxa1
>  =  (0.24)   Depth: 2/10   00:00:00
>1...Kb2 2.Qh8+ Kb1 3.Qxa1+ Kxa1
>  =  (0.24)   Depth: 3/13   00:00:00
>1...Kb2 2.Qg7+ Ka2 3.Qa7+ Kb1 4.Qb7 Qd4 5.h5
>  ²  (0.33)   Depth: 4/13   00:00:00
>1...Kb2 2.Qh8+ Kb1 3.Qb8 Qa3
>  =  (0.16)   Depth: 5/18   00:00:01  22kN
>1...Kb2 2.Qh8+ Kb1 3.Qxa1+ Kxa1 4.h5 b3 5.h6 b2 6.h7 b1Q 7.h8Q+
>  =  (0.21)   Depth: 6/21   00:00:02  106kN
>1...Kb2 2.Qh8+
>  ²  (0.46)   Depth: 7/23   00:00:02  109kN
>1...Kb2 2.Qh8+ Kb1 3.Qxa1+ Kxa1 4.h5
>  ±  (0.80)   Depth: 7/23   00:00:06  397kN
>1...Kc2 2.Qc4+ Qc3 3.Qxe4+ Kd2 4.h5 b3 5.h6 b2 6.h7 Kc1 7.Qh4 Qh8 8.Qh6+ Kd1
>  ²  (0.63)   Depth: 7/25   00:00:09  638kN
>1...Kc2 2.Qc4+ Qc3 3.Qxe4+ Kc1 4.Qf4+ Kc2 5.h5 b3 6.Qf5+
>  ²  (0.57)   Depth: 8/25   00:00:23  1628kN
>1...Kc2 2.Qc4+ Qc3 3.Qxe4+ Kc1 4.Qf4+ Kc2 5.h5 b3 6.Qf5+ Qd3 7.Qc5+ Qc3 8.Qxc3+
>Kxc3 9.h6 b2 10.h7 b1Q 11.h8Q+ Kc4 12.Qe5 Qd3
>  ²  (0.55)   Depth: 9/27   00:00:47  3433kN
>1...Kb2 2.Qc4
>  ²  (0.32)   Depth: 9/29   00:01:15  5551kN, tb=1
>1...Kb2 2.Qc4
>  ²  (0.32)   Depth: 9/29   00:01:17  5629kN, tb=1
>1...Kb2 2.Qg7+ Kb1 3.Qxa1+ Kxa1 4.h5 b3 5.h6 b2 6.h7 b1Q 7.h8Q+
>  =  (0.24)   Depth: 10/29   00:03:39  16128kN, tb=3
>1...Kb2 2.Qg7+
>  ²  (0.49)   Depth: 11/30   00:03:56  17401kN, tb=3
>1...Kb2 2.Qg7+ Kb1 3.Qxa1+ Kxa1 4.h5 b3 5.h6 b2 6.h7 b1Q 7.h8Q+ Qb2 8.Qa8+
>  ±  (1.20)   Depth: 11/30   00:04:59  22302kN, tb=6
>1...Kc2 2.Qc4+ Qc3 3.Qxe4+ Kc1 4.Qf4+ Kc2 5.Qf5+ Qd3 6.Qxd3+ Kxd3 7.h5 b3 8.h6
>  ²  (0.46)   Depth: 11/30   00:26:57  115010kN, tb=43
>
<snip>
>
>Ernst.



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