Author: Robert Hyatt
Date: 05:13:02 03/02/99
Go up one level in this thread
On March 01, 1999 at 18:44:51, Bruce Moreland wrote:
>
>On March 01, 1999 at 15:46:14, Will Singleton wrote:
>
>>Well, that's an unexpected result. I ran this on Hiarcs, and after the
>>continuation (as above), it still has white down well over a pawn.
>>
>>So that begs the question, does Lambchop or Ferret actually see that the
>>position is drawn? Can a tablebase tell you that?
>
>After 1. Rxf5 Rxf5 2. Bxf5, black has to move somewhere and white simply plays
>Rxe2 on the next move, so you get Kxe2.
>
>The resulting KBP vs KR is drawn.
>
>The machine with the 5-man tables is busy right now. I did a probe to check to
>see that the position is drawn, but I can't check to see if a version actually
>using them at the tips knows for sure that that ending is drawn, but another
>version, which only has 4-man tables at its disposal, thinks it can get rid of
>the h-pawn, leading to a drawn KR vs KB.
>
>So yes, when I run this I get a contempt score back.
>
>If the position really isn't drawn I'm sure it will come to light and I'll look
>slightly stupid.
>
>bruce
nope.. you are correct... dead draw:
8 1.34 -0.37 1. Rg8 Kf2 2. Rgg1 f4 3. Rh1 f3 4.
h4 Rh5
8 2.48 0.00 1. Rxf5+ Rxf5 2. Bxf5 Kf2 3. Rxe2+
Kxe2 <EGTB>
8-> 3.20 0.00 1. Rxf5+ Rxf5 2. Bxf5 Kf2 3. Rxe2+
Kxe2 <EGTB>
9 4.19 0.00 1. Rxf5+ Rxf5 2. Bxf5 Kf2 3. Rxe2+
Kxe2 <EGTB>
9-> 6.49 0.00 1. Rxf5+ Rxf5 2. Bxf5 Kf2 3. Rxe2+
Kxe2 <EGTB>
10 7.33 0.00 1. Rxf5+ Rxf5 2. Bxf5 Kf2 3. Rxe2+
Kxe2 <EGTB>
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