Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Mate in 21 !! A challenge for your programs in 2010 !

Author: Dieter Buerssner

Date: 10:56:12 04/17/03

Go up one level in this thread


On April 17, 2003 at 13:02:01, Drexel,Michael wrote:

> 8/8/8/8/8/3Q4/pp1KPPP1/k6n w - - 0 1
>
>White to move and mate in 21

I disagree with the subject :-) Yace Paderborn, P4 2.53 GHz, 300 MB hash:

[nodes      time    score depth]
 112093397  1:55.5   7.54 18.  1. Qd4 Kb1 2. Qe4+ Ka1 3. Qe5 Kb1 4. Qf5+ Ka1
                               5. Qf6 Kb1 6. Qg6+ Ka1 7. Qg7 Ng3 8. fxg3 Kb1
                               9. Qg6+ Ka1 10. Qg7 Kb1 11. Qg6+ Ka1 12. Qg7
                               {1081}
 113036366  1:56.3   8.28 19++ 1. Qd4 Kb1 2. Qe4+ Ka1 3. Qe5 Kb1 4. Qf5+ Ka1
                               5. Qf6 Kb1 6. Qg6+ Ka1H 7. Qg7H Ng3H 8. fxg3H
                               Kb1H 9. Qg6+H Ka1H 10. Qg7H Kb1H 11. Qg6+H Ka1H
                               12. Qg7HR {1081}
 113036610  1:56.3  Mat21 19++ 1. Qd4 Kb1 2. Qe4+ Ka1H 3. Qe5H Kb1H 4. Qf5+H
                               Ka1H 5. Qf6H Kb1H 6. Qg6+H Ka1H 7. Qg7H Kb1H 8.
                               Qh7+H Ka1H 9. Qh8H Nxf2H 10. Kc2H Nd1H 11. Kb3H
                               Kb1H 12. Qh7+H Ka1H 13. Qg7H Kb1H 14. Qg6+H
                               Ka1H 15. Qf6H Kb1H 16. Qf5+H Ka1H 17. Qe5H Kb1H
                               18. Qe4+H Ka1H 19. Qd4H Nc3H 20. Qxc3H {HT}
                               {1001}
 388090526  5:45.3  Mat21 19t  1. Qd4 Kb1 2. Qe4+ Ka1 3. Qe5 Kb1 4. Qf5+ Ka1
                               5. Qf6 Kb1 6. Qg6+ Ka1 7. Qg7 Kb1 8. Qh7+ Ka1
                               9. Qh8 Nxf2 10. Kc2 Nd1 11. Kb3 Kb1 12. Qh7+
                               Ka1 13. Qg7 Kb1 14. Qg6+ Ka1 15. Qf6 Kb1 16.
                               Qf5+ Ka1H 17. Qe5H {HT} {661}
 414124889  6:13.5  Mat21 19.  1. Qd4 Kb1 2. Qe4+ Ka1 3. Qe5 Kb1 4. Qf5+ Ka1
                               5. Qf6 Kb1 6. Qg6+ Ka1 7. Qg7 Kb1 8. Qh7+ Ka1
                               9. Qh8 Nxf2 10. Kc2 Nd1 11. Kb3 Kb1 12. Qh7+
                               Ka1 13. Qg7 Kb1 14. Qg6+ Ka1 15. Qf6 Kb1 16.
                               Qf5+ Ka1 17. Qe5 {HT} {661}

Not the whole main line is shown, due to hash tables.

Regards,
Dieter



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.