Author: Heiner Marxen
Date: 16:48:31 01/25/01
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On January 25, 2001 at 18:09:41, leonid wrote: >On January 25, 2001 at 17:07:45, Heiner Marxen wrote: [snip] >>I estimate 8 hours for depth 9, so I will omit that. >>I'm currently running Paul's 15 positions. >>Some appear to be also too deep for Chest. >>I will report here, when I'm through. > >Good! I already depose this position in my library. Now each created position I >can print when it is on the Chess Club site. Inside of my program I never wrote >graphics since I considered this as finalization of program. I am too far from >this. Some time money and very often absence of time limite my progress in >actual chess program. If you want a graphic representation of a FEN string, a rather simple program or script would do that, spitting out a HTML page, which you can look at locally with your browser. It should not be so hard to do that even in assembler. I have done it as a bourne shell script using awk. For the next release of Chest I will polish that a bit and make it part of the distribution. It is quite useful. >>>Position was average in my mind since it was not that endless position of 20 or >>>30 moves deep, like I have seen here already few times. Number of initial legal >>>moves from each side is moderate. Only white side reach slightly over 100 moves. >>> Black have only few responses after initiation of hostilities. >> >>Ah, I see. But "average"? With that many queens? >>I consider 100 legal moves to be a huge number... >>I remember that an early version of Chest was limited to 80 legal moves ;-) > >To be frank with you, this was usual positions for me when I wrote my first move >generator, around 7 years ago. I had then 200 moves limite. Now I see that it is >not enough. When I will rewrite for Linux, will put 300 moves limite. Somebody >here, few months ago, came with position that contained more that 200 moves. As far as I know the record for strictly legal positions is 218 moves. Some of your positions have been not strictly legal, though ;-) But 300 should be enough for everything with at most 16 pieces of each colour. >Around 6 months ago I reached one side with forced mate positions where 9 queens >you could see more than often. Some italian site done in 1997. Let me guess: Valentin Albillo's page? He has created some really bizarre positions. I have contributed to some. > Then I started >regarding my beloved heavy positions as nothing shameful and even too damn >usual. Later I found on Internet even more places with forced mate densely >populated with equally pretty queens of both ethnic origin. Oh, I _like_ your monsters! And yes, they _are_ useful. Just now I tune one of my heuristics, which did not do so well, here. So it just helped me! Thanks! Heiner
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