Author: Joachim Rang
Date: 07:03:46 12/15/05
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On December 15, 2005 at 09:34:33, Tord Romstad wrote: >On December 15, 2005 at 06:58:55, Robert Allgeuer wrote: > >>Hi Tord, >>What is ECMGCP? Is it a tactical or a positional test-suite? > >It's purely tactical. It's a set of combinations taken from a book >called "Encyclopaedia of Chess Middlegames", hence the letters "ECM". >Gian-Carlo Pascutto has analysed the positions and removed the most >obvious incorrect solutions, hence the letters "GCP". > >ECMGCP is more or less the standard "quick and dirty" tactical test >suite for computer programs today. It is used in basically the same >way the WAC test suite was used a few years ago. WAC is too easy >on today's hardware; most of the ECMGCP positions are slightly harder. > >>Can you please post the positions. > >Dieter posted the link. > >>PS.: So this also means that new Glaurung has a very high score in ECMGCP as >>well ... > >Previous versions scored well, too. This is a bit strange, and it actually >worries me a bit. Glaurung is usually very good at finding the flashy, >sacrifical tactics which are usually found in books and magazines (the type >you will find in the ECMGCP suite). It is horribly bad at spotting the more >mundane tactics which decide typical computer vs computer games. There >seems to be some sort of serious imbalance in my search, and I suspect that >it hurts the playing strength considerably. I don't understand the reason >for the problem. Glaurung does not use any extensions except the standard >ones (minus the recapture extension, which never worked for me), and only >checks are extended by a full ply. > >Tord hm, perhaps your pruning is too safe. It does not prune away the fancy looking but rare tactical flashes in ECMGCP. ;-) Joachim
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