Computer Chess Club Archives

Search

Terms

Messages

Subject: Ruffian finds Mate in 11 in under 3 minutes ... with diagram this time?

Author: Richard A. Fowell

Date: 00:38:25 01/19/05

This position is from Jack Peter's chess column in last Sunday's Los Angeles
Times:
http://www.latimes.com/features/puzzles/chess/?track=mainnav-chess

[D]rnbq1r1k/pppp1p1p/3n1Pp1/6N1/2B2Q2/8/PB3PPP/R4K1R w - -

On my 867 MHz Mac G4, Ruffian 2.1 takes less than three minutes to claim Mate in
11, with

+mate 11 18/2 2:25 73712484 nodes 506905 nps

1. Nxf7 Rxf7 2. Bxf7 Qf8 3. Bxg6 Nf7 4. Qh4 Qg8 5. Bxf7 Qxf7 6. Re1 h5 7. Re8
Kh7 8. Qe4 Qg6 9. Qe7 Kh6 10. Bc1 Qg5 11. Qg7

MacChess, and HIARCS take more 12 minutes to settle on Nxf7, and more than 20
minutes
to claim a Mate score, and even then take longer to claim Mate in 11. Fruit
2.0.0 does not
even find the key move in 25 minutes.

How do others fare - and is this really Mate in 11?

-Richard

Re: Ruffian finds Mate in 11 in under 3 minutes ... with diagram this time? Bas Hamstra 06:31:34 01/20/05
Re: Ruffian finds Mate in 11 in under 3 min; CM10 : #9 in 6 sec ! Vincent Lejeune 09:20:44 01/19/05
- Re: Ruffian finds Mate in 11; CM10 : #9 in 6 sec ! on an AMD@3000+ Vincent Lejeune 09:21:42 01/19/05
Re: Ruffian finds Mate in 11 - mate in 9 with Bd3 - too bad about Chest Richard A. Fowell 08:20:14 01/19/05
- Re: Ruffian finds Mate in 11 - mate in 9 with Bd3 - Chest SOLUTION Andreas Stabel 04:24:46 01/25/05
  - Re: mate in 9 with Bd3 - Chest SOLUTION - CHEST on Macintosh OS/X? Richard A. Fowell 17:28:56 01/25/05
    - Re: mate in 9 with Bd3 - Chest SOLUTION - CHEST on Macintosh OS/X? William Bryant 16:23:13 01/26/05
  - Re: Ruffian ,,, mate in 9 with Bd3 - Chest SOLUTION Thanks!! Richard A. Fowell 17:18:46 01/25/05
Re: Ruffian finds Mate in 11 in under 3 minutes ... with diagram this time? James T. Walker 03:04:56 01/19/05
Mate in 10? Gian-Carlo Pascutto 03:03:00 01/19/05
Re: Ruffian finds Mate in 11 in under 3 minutes ... F. Huber 02:07:05 01/19/05
- Re: Ruffian finds Mate in 11 in under 3 minutes ... Jouni Uski 02:20:22 01/19/05
  - Re: Ruffian finds Mate in 11 in under 3 minutes ... F. Huber 02:27:59 01/19/05
- Re: Ruffian finds Mate in 11 in under 3 minutes ... George Sobala 02:19:04 01/19/05

This page took 0.01 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.