Author: Robert Hyatt
Date: 17:46:52 08/13/00
Go up one level in this thread
On August 13, 2000 at 18:27:00, Alvaro Rodriguez wrote: >On August 13, 2000 at 18:16:30, Robert Hyatt wrote: > >>On August 13, 2000 at 15:21:17, Alvaro Rodriguez wrote: >> >>>On August 13, 2000 at 15:09:02, Robert Hyatt wrote: >>> >>>>On August 13, 2000 at 13:01:27, Jon Dart wrote: >>>> >>>>>>This is an interesting move IMHO as the bishop doesn't get lost at all , it >>>>>>simply can't participate in the game anymore ; in fact it lasts until the 46th >>>>>>move when white finally wins the bishop . It seems to me without special code >it is impossible to avoid this ( for example Fritz 6a would play like that >>>>>> too) . >>>>> >>>>>Crafty has had special-case code to avoid this kind of move for some >>>>>time. >>>>> >>>>>--Jon >>>> >>>> >>>>Even more interesting, because it understands that problem, it will leave >>>>the pawn 'hanging' because it thinks no one is silly enough to take it. If >>>>a program doesn't have that bit of knowledge, it almost looks like Crafty >>>>tries to 'tempt it'. :) >>>> >>>>I see that against more than one program on ICC, pretty regularly... >>> >>>Is it hard to implement that in a program? Because maybe other programmers >>>should think about it, because like you said, no one is silly enough to take it >>>:-) >>> >>>When you see those games in ICC, does crafty win them ? >>> >>>Regards, >>>Alvaro >> >>Most of the time it wins. On occasion there is some long and complicated way to >>safety get the bishop out. Which means Crafty has simply gambited a pawn away >>for nothing. But these cases are very rare. A bishop at a2, with a white pawn >>at b3 that is supported, is in great trouble. > >Big trouble for sure.. Is it hard to implement that in a program? If it is easy, >I don´t understand why programmers don´t use that in their programs. Some does, >but others don´t.. Maybe they think that it´s a good move. I don´t know.. > >Regards, >Alvaro I think that it is easy to lull yourself to sleep with the argument "this is so rare it isn't worth handling.." There are many such cases. If you do that for all of them, suddenly it is not rare, it is commonplace to see one of those holes show up in every game. I think that plugging such holes, when they show up, is a critical thing to fix. If you keep doing this, sooner or later you don't have any holes left to plug...
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