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Subject: Re: ECE #3

Author: Dann Corbit

Date: 11:42:33 03/17/99

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On March 17, 1999 at 06:49:32, Steffen Jakob wrote:
>Hi,
>
>this is the EPD of ECE position #3 (from the epd file which I downloaded from
>Dann's ftp site):
>
>3R4/8/8/8/8/6K1/4p3/4k3 w - - bm Re8; id "ECE3.0003";
>
>This position is a draw, right?! Therefore almost any move (well, besides Re2
>and Re1) are best moves. So this positions doesn't seem to be a good test
>position. Did I miss something? I just began to examine the ECE suite...
My analysis has Kf3 up 2 pawns for this position.  It is strange that you have
Re8 as bm and I have Kf3.  Perhaps they are about equal.  It could well be a
draw, because the analysis is only 23 plies deep.  In general, test suites are
full of bugs.  About 20% of the answers are wrong, typically.  Here is the EPD
position you mention from C.A.P.:

3R4/8/8/8/8/6K1/4p3/4k3 w - -; acd 23; acn 168815481; ce 200; pv Kf3 Kf1 Rh8
e1=N+ Kg4 Kg1 Kf5 Kf1 Rh1+ Ke2 Ke5 Kd1 Kf6 Kd2 Ke6 Nc2 Rh2+ Kc1 Kf7 Kb2 Rh1 Na3
Rh8 Nc4 Rg8; bm Kf3; pm Kf3; id ECE.0003;



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