Author: Matt Frank
Date: 13:02:08 02/06/99
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On February 05, 1999 at 20:06:05, Djordje Vidanovic wrote: >On February 05, 1999 at 18:05:02, Robert A. Basham wrote: > >>My CM-4000 shows B e6 here....however, most other programs play >> >>B x c3... (just as in the game you posted)... >> >>IMHO, I do not see that this move makes a very good "test move" for >>new chess programs to evaluate... :-) >> >>It did not "lose the game" right at move 8... >> >>Robert > >I disagree with you. Chess programs usually do not lose games through tactics >but by being outplayed strategically. This is a typical position of the latter >kind -- meaning that the programs that capture the Knight on c3 simply do not >possess the knowledge of what might happen if the the black g7 bishop is off the >board, what with all the weak and gaping black squares on Black's kingside. The >strategic decision not to capture on c3 has apparently been made on the basis of >some sophisticated knowledge and that is what programmers should do. > >I believe that the game is as good as lost after 8...Bxc3, especially if the >opponent is a GM. It is not lost right away after a single tactical shot, but is >lost, after White starts taking advantage of the weak black squares. > >Frankly, I must say that I had expected Wchess to avoid the obvious weakening of >the kingside by playing 8...Nf6. My expectation was based on the PSH algorithm >of Dave Kittinger's (Pre Scan Heuristics) used in the good old Super Connie. >However, it seems that even Dave has opted for speed in the meantime. > >So now I will set up this position to test the knowledge based programs such as >CSTal, Hiarcs 7 and Gandalf 3. I haven't done that yet hoping that someone else >would do the job :)) What do you folks expect that these three sages will come >up with? > >PS: Meantime I did try Shredder 2, Hiarcs 7 and CSTal. All of them wish to play >8...Bxc3 :(( Where have all the idealists gone?? Haven't tried Gandalf 3 yet >because this otherwise fine program has one very nasty shortcoming: can read >neither pgn's nor epd's... I just wonder what Thorsten Czub would say about this >position with regard to the non-materialist CSTal? > >Regards, >Djordje Djordje this is a great position to run these progrrams on!!! I ran Hiarcs 7 for hours on this position and it found that the position leading up to 8...Bxc3? is played poorly by black prior to that. For example, after 6, h3 Be6 7. O-O c4 black is essentially even. Matt Frank
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