Author: Omid David
Date: 03:12:53 07/17/02
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On July 16, 2002 at 16:20:30, Russell Reagan wrote: >On July 16, 2002 at 15:14:17, Omid David wrote: > >>Each program has its own style and thus should play openings which fit its >>style. Of course these openings should be tuned by the programmer, so a good >>deal of chess knowledge is necessary on programmer's behalf. >> >>As an example, in tournaments I always play Sicilian against 1.e4 and adopt the >>Scheveningen variation, so I need to have a vast knowledge of Scheveningen (and >>Najdorf) while I can forget about Caro-Kann! Programs too should have their own >>opening repertoire consisting of an extensive knowledge of all variations which >>might occur in their chosen opening variations, while they can forgo other >>variations. >> >>Omid. > >Thanks Omid. I have another question. Let's take an example. Let's say that my >program has a Ruy Lopez line that goes to move 20, and then the book stops >there. Would it be advantageous to let my program think from that position for, >say, a week, and then add that move to my book? That way I have a week's worth >of search instantly. In a versatile opening like Ruy Lopez there are too many positions that can arise after countinuing a variation. If you're sure which variation will arise, then go ahead, let the engine search and record the result. But in practice that's a total waste of time. You'd better work on tuning the variations than letting the engine think on a particular position which in practice has a little chance of appearingon the board. Omid. > >The only thing that I forsee as a problem is the same problem that a beginner >who memorizes book lines has. For example, let's say my program plays the last >move in the book (the one that was searched on for a week), and it plays it, and >my opponent responds, and then my program doesn't have access to the long >variation that it had in the week long search, so now my program *might* (not >sure about this) be just like the booked up beginner who doesn't know what to do >when it leaves the book. For example, the program might need to search to 20 >plies to "see" the reasoning for it's previous move, and if it can only get to, >say, 16 plies in the given time slot in a game situation, it might not follow >that PV line. Do you see this as something that might be a problem? > >Thanks, >Russell
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