Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: How long does it take your engine to find the mate in 4?

Author: Mike Hood

Date: 01:16:19 12/31/03

Go up one level in this thread


On December 30, 2003 at 20:30:31, K. Burcham wrote:

>
>
>>"But the winner is the tactical monster Fritz 5.32, who finds the mate in 1 second".
>
>
> [D] r2qk2r/pp1nbRpp/4Q3/1B6/8/3p4/PPP3PP/5RK1 w kq -
>
>Here are four that will show mate in 0 sec.
>
>Shredder 7.04
>
>  8/31	 0:00 	  +M4 	1.Kh1 h6 2.Rxg7 Rf8 3.Qg6+ Rf7 4.Qxf7+ (387.402) 459.0
>best move: Kg1-h1 time: 0:00.859 min  n/s: 459.090  CPU 99.8%  nodes: 387.472
>
>Ruffian 1.0.5
>Perola Valfridsson
>
> 10/30	 0:01 	+12.31	1.Re1 Qb6+ 2.Qxb6 axb6 3.Rexe7+ Kd8 4.Rxd7+ Kc8 5.Rc7+ Kb8
>6.Rxb7+ Kc8 7.Rfc7+ Kd8 8.Rc4 d2 9.Rd7+ Ke8 10.Ra7+ Kd8 11.Rd4+ Kc8 12.Rxa8+ Kb7
>13.Rxh8 (2.970.786) 1822.5
> 10/30	 0:02 	  +M4 	1.Kh1 dxc2 2.Rxg7 Rf8 3.Rxf8+ Kxf8 4.Qf7+ (4.512.992)
>1888.2
> 11/30	 0:02 	  +M4 	1.Kh1 dxc2 2.Rxg7 Rf8 3.Rxf8+ Kxf8 4.Qf7+ (4.665.043)
>1881.0
> 12/30	 0:02 	  +M4 	1.Kh1 dxc2 2.Rxg7 Rf8 3.Rxf8+ Kxf8 4.Qf7+ (4.862.093)
>1862.8
>
>ChestUCI Ver.3.1
>Franz Huber
>
>CPU: 2166mhzAMD
>FEN: r2qk2r/pp1nbRpp/4Q3/1B6/8/3p4/PPP3PP/5RK1 w kq -
>Search for Mate in 23 ...  (Hash=192MB)
>Search completed ...  (Time=0.11s)
>Mate in 4 found !  (1 Solution in 00:00)
>  4/04	 0:00 	  +M4 	1.Kh1 a5 2.Rxg7 Rf8 3.Rxf8+ Kxf8 4.Rg8+ 423.6
>best move: Kg1-h1 time: 0:00.266 min  n/s: 423.688  nodes: 46.182
>
>Chess Tiger 14.0:
>
>1.Kh1
>  +-  (8.42)   Depth: 7   00:00:00  317kN
>1.Kh1 dxc2 2.Rxg7 Rf8 3.Rxf8+ Kxf8 4.Rg8#
>  +-  (#4)   Depth: 7   00:00:00  697kN
>
>List 504:
>
>1.Re1 Qb6+ 2.Qxb6 axb6 3.Rexe7+ Kd8 4.Rxd7+ Kc8 5.Rc7+ Kb8 6.Rxb7+ Kc8 7.Rfc7+
>Kd8 8.Rc3 h5 9.Rd7+ Ke8 10.Ra7+ Kf8 11.Rxa8+ Ke7 12.Rc7+ Kd6 13.Rc6+ Kd5
>  +-  (13.55)   Depth: 11   00:00:00  1552kN
>1.Kh1!
>  +-  (13.95)   Depth: 11   00:00:02  4761kN
>1.Kh1! g5 2.Rg7 Rf8 3.Rxf8+ Kxf8 4.Rg8#
>  +-  (#4)   Depth: 11   00:00:02  4919kN
>
>Fritz 5.32:
>
>1.Re1! Qb6+ 2.Qxb6 axb6 3.Rexe7+ Kd8 4.Rxd7+ Kc8 5.Rc7+ Kd8
>  +-  (5.53)   Depth: 6/21   00:00:00  38kN
>1.Kh1!
>  +-  (5.56)   Depth: 6/25   00:00:00  134kN
>1.Kh1! dxc2 2.Re1 c1Q 3.Rxe7+ Qxe7 4.Qxe7#
>  +-  (#4)   Depth: 6/28   00:00:00  416kN

Usually I'm ashamed of my relatively slow PC, but this is a case where being
slow is an advantage. On your fast PC the engines all seem to run at the same
speed, but on my PC you can tell who is really the fastest.

List 5.04: 10 seconds (List needs 2 seconds to find mate on your PC)
Chess Tiger 14: 3 seconds (0 on your PC)
Shredder 7.04: 2 seconds (0 on your PC)
Fritz 5.32: 1 second (0 on your PC)



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.