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Subject: Re: Difficult mate for programs

Author: Jorge Pichard

Date: 04:23:51 10/12/02

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On October 12, 2002 at 06:46:41, Andreas Stabel wrote:

>On October 12, 2002 at 06:04:44, Rex wrote:
>
>>Ruffian results on a 1.533Ghz computer.
>>
>>00:00:01.2	18.15	8	1415595	Ne5+ Kb6 Bc5+ Qxc5 Nd7+ Ka7 Qxc5+ Ka8
>>00:00:02.8	18.47	9	3368004	Ne5+ Kb6 Bc5+ Qxc5 Nd7+ Ka7 Qxc5+ Ka8
>>00:00:06.3	18.74	10	7688982	Ne5+ Kb6 Bc5+ Qxc5 Nd7+ Ka7 Qxc5+ Ka8
>>00:00:13.0	19.09	11	15529183	Ne5+
>>00:00:16.7	 Mate in 11	11	19957155	Ne5+ Kb6 Bc5+ Qxc5 Nd7+ Ka7 Qxc5+ Ka8 Qxc7
>>Rhd8 Nb6+ Ka7 Na3 Rd6 Nxb5+ axb5 Nc8+ Ka8 Qa5+ Ra6 Qxa6+ Bxa6 Ra7#
>>00:00:36.8	 Mate in 11	12	44015534	Ne5+ Kb6 Bc5+ Qxc5 Nd7+ Ka7 Qxc5+ Ka8 Qxc7
>>Rhd8 Nb6+ Ka7 Na3 Rd6 Nxb5+ axb5 Nc8+ Ka8 Qa5+ Ra6 Qxa6+ Bxa6 Ra7#
>>00:01:39.7	 Mate in 11	13	117956879	Ne5+ Kb6 Bc5+ Qxc5 Nd7+ Ka7 Qxc5+ Ka8 Qxc7
>>Rhd8 Nb6+ Ka7 Na3 Rd6 Nxb5+ axb5 Nc8+ Ka8 Qa5+ Ra6 Qxa6+ Bxa6 Ra7#
>
>Perhaps not so difficult after all :)
>
>I tried crafty 19.00 on a P4 1.8 gig machine and got a mate in 12 after
> 40 minutes:
>14->  25:15  19.75   1. Ne5+ Kb6 2. Bc5+ Qxc5 3. Nd7+ Ka7
>                     4. Qxc5+ Ka8 5. Na3 Bxg2 6. Kxg2 Rb7
>                     7. Qc6 b4 8. Nc5 Rb8 9. Rxc7 bxa3 10.
>                     Qxa6+ Ra7 11. Qxa7#
>15    26:21     ++   1. Ne5+!!
>15    39:56  Mat12   1. Ne5+ Kb6 2. Bc5+ Qxc5 3. Nd7+ Ka7
>                     4. Qxc5+ Ka8 5. Qxc7 Rhd8 6. Nb6+ Ka7
>                     7. Na3 Rd6 8. Nxb5+ axb5 9. Nc8+ Ka8
>                     10. Nxd6 f6 11. Qa5+ Ba6 12. Qxa6#
>
>Regards
>Andreas Stabel


It would be interesting to see a match in any time control between Ruffian
versus Crafty 19.0.

Pichard.



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