Author: William Penn
Date: 05:35:44 05/21/05
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On May 20, 2005 at 21:18:18, Komputer Korner wrote: >True to their word on their Chessbase site, Shredder 9 's exciting new feature >of not discarding it's analysis when the user manually steps back in the move >path and then goes back to the latest position actually works well. How does >this not weaken Shredder slightly when analyzing in infinite mode? I am >wondering whether this feature (which seems to be a nice one because you don't >have to wait for the latest analysis the 2nd time you view a position.)actually >costs you more in the end because of hash table limits that may get reached. >Does any other program do this? On a 2.8GHz computer with a 285 MB hash table, >when does it get filled up with an average engine now and would this feature >make much of a difference? Please, only chess computer programmers responses >on this one. I'm not a current chess computer programmer, but want to comment that this feature does NOT work reliably on my Windows XP Home computer. I have had no satisfactory response from the author or from others here on this forum. I sent several examples to the author but he didn't respond in depth, nor satisfactorily, to explain nor rationalize nor fix the problem. It works only occasionally for me, perhaps 1 time in 10. When it works, it's great, but unfortunately that's rare. I have noticed that it is most likely to work when a capture is involved, but it occasionally works when no capture is involved. It may also be more likely to work if there are fewer intervening games before the prior game is recalled for continued analysis. So there is some kind of random bug on my computer, apparently. Either that, or there is insufficient/unclear explanation of exactly what this feature is supposed to be and do. It certainly does not work as expected. Shredder 8 is more reliable in this regard than Shredder 9, in my experience. It looks like the new .pl2 file just isn't working right for me. I have the Shredder 9 UCI version. WP
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