Author: Torstein Hall
Date: 15:58:01 05/25/98
Go up one level in this thread
On May 25, 1998 at 14:39:09, Robert Hyatt wrote: >On May 25, 1998 at 10:59:50, blass uri wrote: > >> >>On May 25, 1998 at 05:56:08, Moritz Berger wrote: >> >>>Here's an interesting 'positional' test position: >>> >>>1k1r4/pp1bb1p1/1qn1p3/3pPr1p/1P6/P4NPP/4BPK1/R1BQ3R w - - 0 19 >>> >>>The (positional) key move is 19.Bb2!! which leads to a clear advantage >>>for white (e.g. 19.Bb2 Rc8 20.Nd4 Nxd4 21.Bxd4). 19.b5 only ensures >>>equality, 19.Bf4 (actually played by one program) lets black play >>>another beautiful key move: 19...h4! >>> >>>1k1r4/pp1bb1p1/1qn1p3/3pPr1p/1P3B2/P4NPP/4BPK1/R2Q3R b - - 0 19 >>> >>> >>>How long do your programs need to play 19.Bb2 and 19...h4 (after >>>19.Bf4)? 19...h4 is of course much easier than 19.Bb2. >> >>junior evaluates the position after 19.Bb2 as adventage for black >>it suggest 19...h4 with a possible line >>20.g4 Rff8 21.Rc1 a6 22.Rc2 Rc8 23.Qd3 g5 24.b5 axb5 25.Qxb5 Qa7 >>26.Rhc1 Ka8 27.Qd3 Qa4 28.Qe3 Rcd8 29.Qb6 Rf4 30.Bd1 Qa7 >>31.Qxa7+ Kxa7 32.Be2 >>when all white moves are suggested by Fritz5 and all black moves by >>Junior >> >>fritz5 evaluate the position as something like 1 pawn adventage for >>white all >>the time while Junior4.6 evaluates the position as somethink like .5 >>pawn >>adventage for black during these moves. >>I have no idea who is right(I think we should ask a grandmaster). >> >>Uri > > > >personally, I would trust Fritz on tactics, but I'd trust Junior on the >positional evaluation. I think that this would be an easy position for >"self-immolution". White has difficulties in this position. And a >program >that only looks for active play can easily open the position up and have >it >explode in its face... > >the question here is whether to begin to shore up the kingside by over- >protecting f2 (among other weak squares) or to try and punch something >thru in the center. The queenside seems difficult to crack while black >can >play g5 and threaten to bring a can-opener to the kindside... On my PC Hiarcs6 prefered Bd3 and Fritz liked Pb5. Anyway its certainly a position with a lot of different possible defence moves. Torstein Hall
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