Author: Thorsten Czub
Date: 16:02:44 12/22/02
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On December 22, 2002 at 17:52:10, Uri Blass wrote: >I do not think that knowledge is the reason for chess system tal's failure. >I do not think that knowledge is a reason not to search deeper because knowledge >can help for better pruning rules. right. chess system tal was not losing at times it was made due to beeing outsearched. It also was always very succesful in playing out a good position. >chess system tal has simply bugs. right. and since the development did not continued, those bugs are still in the program. >Thorsten reported bug in null move pruning and I remember that he suggested a >style without null move pruning for fast computers). right. >I also rememebr another bug when chess system tal believed wrong mate in one of >thorsten's tournament. exactly. there is still a bug in the static move generator that gives lost games in some positions only due to fact that chess system tal generated illegal moves or threatens opponent with illegal stuff... >I believe that the programmer simply decided to leave chess for other games. > >Uri i guess that chris was bored by the computerchess scene. he wrote or worked on chinese chess or other stuff (go ?!). and than sold his company. as far as i know he is now busy feeding his alpaquas and posting in Chess Thinkers Forum. I liked the program. And i think it could have been stronger with fixing buxes and making the search more accurate. There have been efforts to build the engine new from the scratch. but this work never ended into a full product. and reached only some crashing alpha-versions. it's a pity. but many things in life go wrong direction. IMO CSTal is still very interesting to play against, if you want to play yourself. i don't know any other chess program (despite Super-Constellation) that creates a mate and mate-plan so interesting and clever like CSTal. of course todays chess programs have new methods. CSTal is a few years old. i have made a web page about it at http://www.thorstenczub.de/cwnow.html and there are many other nice articles about it here: http://www.thorstenczub.de/complcss2.html ENGLISH http://www.thorstenczub.de/cst_f_v.html ENGLISH http://www.thorstenczub.de/plyfrei.html GERMAN http://www.thorstenczub.de/tal_lebt_inscw.html GERMAN Please before you click on it, most of the stuff is in german. Of course the PGN-games are in english.
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