Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Twin miniatures [by Werner Speckmann,1955] Mate in 17 and Mate in 13

Author: Heiner Marxen

Date: 03:28:25 01/27/01

Go up one level in this thread


On January 26, 2001 at 13:14:27, Paul wrote:

>On January 26, 2001 at 06:55:42, JosÚ Ant˘nio Fabiano Mendes wrote:
>>        Werner Speckmann,1955  Mate in 13
>>        [D]8/8/4p3/2p5/p3Q3/K7/2r5/1k6 w
>
>01:15 WM13 1. Qh1+ Rc1 2. Qh7+ Rc2 3. Qe4 e5 4. Qe1+ Rc1 5. Qd2 Rc2 6. Qd1+ Rc1
>7. Qd3+ Rc2 8. Qe4 c4 9. Qe1+ Rc1 10. Qd2 Rc2 11. Qb4+ Ka1 12. Qe1+ Rc1 13.
>Qxc1x
>
>Is this one okÚ, JosÚ? These solutions (correct or not) sure are nice!
>
>Groetjes,
>Paul

Hi Paul,

Chest confirms the above PV in 21.5 min (K7/600, 350 MB hash).
Currently it is chewing the other twin.  I expect it to need 8 hours for
the complete mate in 17.  Aren't transposition tables great?
The effective branching factor is reduced to below 2.

Heiner



This page took 0.03 seconds to execute

Last modified: Thu, 07 Jul 11 08:48:38 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.