Author: Robert Hyatt
Date: 08:01:50 06/10/02
Go up one level in this thread
On June 10, 2002 at 03:22:55, Andrew Williams wrote: >On June 10, 2002 at 00:18:51, Les Fernandez wrote: > >>On June 10, 2002 at 00:02:39, Robert Hyatt wrote: >> >>>On June 09, 2002 at 23:45:38, Les Fernandez wrote: >>> >>>>I rarely come across strange output using Crafty but this position doesnt seem >>>>to work right. The ce after analysis I think should be -32765 but in fact it is >>>>reporting a "0"??? Either I am dead tired or something is screwy. Would >>>>somebody using Crafty run this epd string? It is a very simple mate and I cant >>>>seem to find the problem. Its probably just late <S>. >>>> >>>>Here is Crafty analysis: >>>> >>>>rnb4k/5r2/2p1p1Q1/pp3pP1/3P4/b2B1KP1/1PPB4/7R b - - acd 1; acn 1; acs 1; ce 0; >>>>pv Rh7; >>>> >>>>The pv appears to be right but the ce value is dead wrong!! >>>> >>>>If you find the same results can someone please explain the nature of this? >>>> >>>>[D]rnb4k/5r2/2p1p1Q1/pp3pP1/3P4/b2B1KP1/1PPB4/7R b - - >>>> >>>> >>>>Thanks >>> >>>Can you describe _exactly_ how you produced that? IE post the epd file >>>you used, etc... >>> >> >>EPD Kit revision date: 1996.04.21 >>unable to open book file [./book.bin]. >>book is disabled >>unable to open book file [./books.bin]. >>search time set to 180.00. >>hash table memory = 48M bytes. >>pawn hash table memory = 10M bytes. >>Crafty 18.9 vs ferret >>kibitz Hello from Crafty v18.9! >>pondering enabled. >>play best book line after search. >>EGTB access enabled >>using tbpath=./TB >>4 piece tablebase files found >>1406kb of RAM used for TB indices and decompression tables >>PFGA: EPD record: 1 >> >>The exact epd string that was in epd.epd was: >> >>rnb4k/5r2/2p1p1Q1/pp3pP1/3P4/b2B1KP1/1PPB4/7R b - - >> >>And the epd.out file was: >> >>rnb4k/5r2/2p1p1Q1/pp3pP1/3P4/b2B1KP1/1PPB4/7R b - - acd 1; acn 1; acs 1; ce 0; >>pv Rh7; >> >> >>The analysis report can be found in my original post here. This one puzzles me >>too Bob but I could not rule out that its late <S>. If you need any additional >>info let me know. >> >>Thanks > >Is this because Black has only one move? In my program, if there's only one move >available *during a game* it only searches to depth 4. For testing epd >positions, it searches normally, even if there is only one move. > >Andrew That might be the reason. With only one move, the epd code in Crafty might not do a search at all, and that would leave the score unchanged from the last epd position perhaps...
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