Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Good Test........for .Engines or the Dedicated... Mate in 11 I Think

Author: Terry McCracken

Date: 02:12:24 11/18/05

Go up one level in this thread


On November 18, 2005 at 01:54:00, Terry McCracken wrote:

>On November 17, 2005 at 22:05:15, Rob Basham wrote:
>
>>[D]r6r/pp2bkpp/2n1Np2/8/3B4/5Q2/qPP2PPP/3RR1K1 w - - 0 1
>>
>>Nxg7 is good, but Bxf6 is better....:-)
>>
>>
>>White was Keres in 1934....played Bxf6!
>>
>>Fritz 7 .....45 sec. P3/850
>>
>>RISC takes 2 min. 17 sec.
>>
>>novag Scorpio...takes 6 min. 45 sec. .....at 6 ply
>
>It's a mate in 15, this might generate more interest, at least for engines.
>
>[Event ""]
>[Site ""]
>[Date "2005.11.18"]
>[Round ""]
>[White "Mephisto"]
>[Black "Mephisto"]
>[TimeControl "-"]
>[Result "1-0"]
>[Setup "1"]
>[FEN "r6r/pp2bkpp/2n1Np2/8/3B4/5Q2/qPP2PPP/3RR1K1 w - - 0 1"]
>
>1.Bxf6 Bxf6 2.Rd7+ Ke8 3.Rxb7 Ne5 4.Nxg7+ Kd8 5.Qxf6+ Kc8 6.Qxe5 Kxb7
>7.Qb5+ Kc8 8.Ne6 Qxe6 9.Rxe6 Rd8 10.Qc6+ Kb8 11.g3 h5 12.Re7 Rd1+ 13.Kg2
>Rg1+ 14.Kxg1 a6 15.Qc7 Mate
>
>Terry

On further inspection, it maybe as short as mate in 11.

This is hard for computers to find the shortest mate.
Atleast for CM9K.

[Event ""]
[Site ""]
[Date "2005.11.18"]
[Round ""]
[White "Mephisto"]
[Black "Mephisto"]
[TimeControl "-"]
[Result "1-0"]
[Setup "1"]
[FEN "r6r/pp2bkpp/2n1Np2/8/3B4/5Q2/qPP2PPP/3RR1K1 w - - 0 1"]

1.Bxf6 Rhf8 2.Bxe7+ Kg8 3.Bxf8 Qxe6 4.Rxe6 Rxf8 5.Qe4 a5 6.Re8 h6
7.Rxf8+ Kxf8 8.Qf5+ Ke8 9.Qe6+ Ne7 10.Rd7 a4 11.Qxe7 Mate

Terry



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.