Author: Dan Newman
Date: 01:02:51 02/11/00
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On February 09, 2000 at 05:27:21, Andrew Williams wrote: <snip> >>So, at least with Shrike there seems to be some sort of deleterious >>null-move effect... >> >>-Dan. > >Ditto for PostModernist. Without null-move, it resolves the mate-in-4 score >after 8 seconds (ply 7). With null-move, it finds g6 in less than 2 seconds, >but 6 minutes later it is stuck in ply 9 and still hasn't found anything >better than mate-in-6. > I wonder what's causing this. I haven't really looked at the position very carefully, but I'd guess it's more likely that it's some sort of tactical oversight problem. I don't see checks (or mates) in the qsearch, so it gets there (inside a null-move search) and runs the SEE which also can't properly handle pins, checks, etc. and probably gets some worthless value back which then cuts off the line leading to mate--or something like that... >BTW Congratulations on Shrike's performance at CCT1. I'm still recovering >from the shock I got when you told me how fast it searches. :-) > >Andrew I was shocked too :) I never expected it to go that fast... And congratulations to PostModernist too: *very* impressive results. -Dan.
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