Author: Vincent Diepeveen
Date: 12:29:14 01/04/01
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On January 04, 2001 at 15:15:55, Jeroen Noomen wrote: >On January 04, 2001 at 13:15:52, Ernst Walet wrote: > >Hi Ernst, > >Yes, I prepared a lot against Van der Wiel, but today's line I didn't expect.... >This is not such a problem, as Rebel uses EOC and I think it got a decent >position after the opening. > >The real problem in this game was, to evaluate the pin on Knight a2. White had a >good position, but failed to do something at its biggest problem: To activate >the rook on a1 and the knight on a2. This hasn't got to do with 'being out of >book by move 3'. >As I explained earlier, it is impossible to cover all lines like this. If a >program fails to take advantage of a move like 3 ... a6?! this is because it has >not enough knowledge how to punish this. People often blame the opening book, >but I think it has to do with pure chess knowledge. Chess programs are not able >yet to punish anti computer strategies. Exactly chessknowledge is what programs need. Diep has pins in evaluation. The weird thing is that i remember that gnuchess had some primitive form of pins in evaluation too. I can't get a program in front of my mind that also has them in evaluation. Basically only programs with mobility and piece activity can start thinking of putting it in evaluation. >Next time when I prepare 3 ... a6, John will play 3 ... b6, or 3... h6, or 3 ... >e6 and even when I have those moves in book, he will be able to throw Rebel out >of book one move later. This is very true. The knowledge from Rebel is no match for a GM who knows what it is knowing. >Jeroen > > >>Hi Jeroen, did you prepare anything against vd Wiel's opening? I believe 3... >>a6 has been played before at AEgon 97? >> >>Ernst.
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