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Subject: Re: When is a mate not a mate ? ..Eduard -> this message is about EGTB ;>)

Author: William Bryant

Date: 05:29:35 03/19/05

Go up one level in this thread


On March 18, 2005 at 22:11:39, Mike Byrne wrote:

>Many engines will show this as mate-in-66 with Rxf5.  But if your engines plays
>Rxf5, it will be a drawn game under current FIDE rules.  However there are many
>shorter mates (<less than 50 moves) that begin with Kd6 .
>
>[d]5k2/3K4/8/R4b2/1R6/8/3B4/5r2 w - - 0 1
>
>Best,
>
>Michael

My old program finds a "Winning" move (Mate in 20) in 24 seconds

Welcome to Screamer 2.00  Build 12
Current Hash Table Size: 65536 K bytes
Current Pawn Hash Size: 16384 K bytes
PVS Search
NULL move Search
3, 4, and 5 Piece Table Bases enabled
20446 kb of Ram used for decompression tables
1024 kb of Ram used for EGTB buffers



New Game ...
Move 1 W>>

New Board Position

Move 1 W>>
PLY          NODES       TIME      SCORE  PV
______________________________________________________________
 5/00         1196       0.043   +326.36  Rxf5+ Rxf5
 6/00         1850       0.048   +326.36  Rxf5+ Rxf5
 7/00         4211       0.093   +326.36  Rxf5+ Rxf5
 8/00         4242       0.098   +326.36  Rxf5+ Rxf5
 9/00        14711       0.258   +326.36  Rxf5+ Rxf5
10/00        61114       0.714   +326.36  Rxf5+ Rxf5
10/03      3923037      24.861        ++  Kc7
10/03      4994486      30.936   +327.28  Kc7 Kf7 Rf4 Rxf4 Bxf4
11/00     10532538      55.015   +327.28  Kc7 Kf7 Rf4 Rxf4 Bxf4



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