Author: Robert Hyatt
Date: 09:15:59 06/01/00
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On June 01, 2000 at 09:38:55, Aaron Tay wrote: >On May 31, 2000 at 10:40:38, Robert Hyatt wrote: > >>>Okay . Thank you for explaining, however one for question please. >>> >>>If in a krpkp situation, would a Kqrkr TB be sufficent? Would it be then >>>considered a unknown if I don't have say KqnKr? In other words unpromotion is >>>usually rare and mostly unnecessay.. >> >>It is "usually" rare and unnecessary. But _not_ always. I have seen cases >>where =R was necessary (in real games) to avoid a stalemate. > >yes. There are some. So in the above situation alone, would the program queen? > If it had two choices, one is to play a move that loses, or two is to play =Q and draw, it would draw. IN fact, it would probably underpromote, since the =R would be better than 0.00 or losing. More common would be to promote or not to promote? And if all you have is =Q and that draws, and by not promoting you keep a mate-in-N score alive, then it simply won't promote. (note that the current crafty won't screw up here, but it took special-case code to handle it properly). Just remember how stupid a program _really_ is. If it can see mate over here, and no mate over there, it will stay "over here" even if "over here" makes no progress of any kind. > >>it has special code for handling this case. Others will eventually do the >>same. However, you can buy 40 gigs of disk for 200 bucks, so having all the >>databases is not unrealistic. > >yes. But for some of us, this is just a hobby..even 200 bucks is too much..In >the future I suppose even 6 pieces TBS will be the norm..But currently, i >suspect most "non-professional testers" use only 4 piece TBs + selected 5 pieces > >>yep... they will refuse to promote until (maybe) they have to avoid a draw >>by 50 move rule. > >Sigh, the pitfalls of a incomplete TB set..
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