Author: Peter Kappler
Date: 23:45:00 07/25/00
Go up one level in this thread
On July 25, 2000 at 17:56:57, Robert Hyatt wrote: >On July 25, 2000 at 16:48:01, Ralf Elvsén wrote: > >>On July 25, 2000 at 14:52:06, Robert Hyatt wrote: >> >>> >>> >>>I don't see "big" holes. I had a chat with two GMs this week, in fact, and >>>neither came up with any serious flaws they thought needed immediate attention, >>>this for the first time in a couple of years that this has happened. This is >>>not saying there are no holes... just no "gaping holes" that they noticed... >>> >>>Which is a good sign, as they had been reporting 'gaping holes' regularly until >>>the last couple of months... Now we start on the 'sorta-gaping holes' I guess. >>> >>>:) >> >>From my somewhat less informed perspective I have to agree. I also >>own Hiarcs and for that program I have a long list that I think >>should be fixed, i.e. things I can see with my limited chess knowledge. >>For Crafty, the holes are more difficult for me to put my finger on. >>Although Hiarcs wins more often than not on my machine... >> >>Of course, there are sometimes I think Crafty misplays >>some endgame positions with relatively few pieces. I have a nagging >>supspicion this is because you always (?) use 5-man TBs and I >>don't. Do you think it is possible that you miss "bugs" because >>of this? > >Sure... a year or two ago, someone reported that it couldn't mate with B+N >vs a lone king, yet I stole that code directly from Cray Blitz. But somewhere >between putting it in, and last year, I screwed up a table of values, and sure >enough, it couldn't mate without tablebases. I fixed it quickly and easily, >but on my machine, it never happened as I always have tablebases around... > > > > >> >>I also think Crafty would do better in comp-comp games if it >>valued space higher, but I know that's none of your priorities. > >It does in a way, but it doesn't understand it particularly well. The danger >is that you wreck your pawns to get more space, and that can turn into an >endgame nightmare... > > > > >> >>Btw, I hope you finally find the time to add those singular extensions. >>If this makes Crafty tactically sharper (does it?) it will be even more >>dangerous for the commercials. >> >>Ralf > >It should definitely be tactically sharper. Of course, there are costs as well, >which makes it harder to evaluate. Speaking of SE, where can I find a good paper? Did Hsu publish one? --Peter
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