Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Triple a-pawn and wrong bishop

Author: Robert Hyatt

Date: 20:08:13 03/27/00

Go up one level in this thread


On March 27, 2000 at 21:27:31, Dann Corbit wrote:

>On March 27, 2000 at 21:17:00, Robert Hyatt wrote:
>[snip]
>>This is caused by the bishop 'leaving'.  It found a way to sac the bishop,
>>and since you don't have even simple databases like kpk, it won't realize that
>>the resulting ending is a dead draw...
>>
>>I don't get that odd behavior at all here, with databases turned on...
>That's odd.  I have the 3&4 piece tablebase files installed, and crafty reports
>that it finds them...
>
>Here is the startup for that position from the log file:
>pondering enabled.
>EGTB cache memory = 6M bytes.
>hash table memory = 24M bytes.
>pawn hash table memory = 8M bytes.
>EGTB access enabled
>using tbpath=e:/crafty/release/tb,F:/KBP
>4 piece tablebase files found
>1302kb of RAM used for TB indices and decompression tables
>search nodes set to 100000000.
>PFGA: EPD record: 1
>end-game phase
>              clearing hash tables
>              time surplus   0.00  time limit 16:39 (16:39)


Watch the PV when the score is funny.  It probably finds a way to force black
to take the B, while keeping 2 or 3 pawns...  most likely 3 pawns...  which
means that if you don't have all the 5 piece endings, that will look like a
winning position for white...



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.