Author: blass uri
Date: 09:28:04 01/14/99
Go up one level in this thread
On January 14, 1999 at 12:13:42, James T. Walker wrote: >On January 14, 1999 at 11:35:34, blass uri wrote: > >> >>On January 14, 1999 at 10:44:31, Laurence Chen wrote: >> >>>On January 14, 1999 at 10:12:44, blass uri wrote: >>> >>>> >>>>On January 14, 1999 at 08:49:37, James T. Walker wrote: >>>> >>>>>On January 14, 1999 at 07:36:07, blass uri wrote: >>>>> >>>>>> >>>>>>5rk1/1B6/4p1pp/2b3p1/3qP3/6P1/1P2QPP1/5RK1 w - - 0 1 >>>>>> >>>>>>This is a position from the game Junior5-FM Boris Mariasin(The result was draw) >>>>>> >>>>>>Junior5 and other programs evaluating it as an advantage fo white because they >>>>>>do not know to count Attackers-Defenders >>>>>> >>>>>>Is there a progam with a more realistic evaluation (small advantage for black or >>>>>>at least less than 0.2 pawn for white)? >>>>>> >>>>>>Uri >>>>>Hello Uri, >>>>>I'm a very bad chess player so I don't understand what is happening in this >>>>>position. I see that white is up a pawn which is about a point. So where is >>>>>the advantage for black? >>>> >>>>The advantage of black is that the black pieces attack f2 and all the white >>>>pieces must defend f2. >>>> >>>>White has no plan to do a progress in the position when black can play h5,g4,h4 >>>>with an attack. >>>> >>>>I am not saying that black is winning but the evaluation should be at least >>>>equality. >>>> >>>>The problem of computers is that they do not count attacker-defemsors of f2 and >>>>cannot understand that the fact that white is passive give black at least >>>>equality >>>> >>>>Uri >>>Uri can you prove this position is equal? Really, you are saying that because of >>>the opposite color bishops in the position. Yet, let me ask you then, what can >>>Black do? Black is down a pawn, and White has a passed pawn on the Queenside, >>>that is why the +1.xx evaluation. So the position is not equal, the assessment >>>is correct, because White can break the pin of f2 easily, and if Black attempts >>>to advance the Kingside pawns, it gets in big trouble, it exposes the King to >>>White pieces. >> >>White cannot break the pin easily >>The game was drawn after >>26.Ba6 Kg7 27.Bb5 h5 28.Bc4 e5 29.b3 g4 30.Bd5 h4 31.Kh2 Qc3 32.f3 gxf3 33.gxf3 >>hxg3+ 34.Kxg3 Be3 35.Rh1 Bf4+ 36.Kg2 Rc8 37.Qf2 Be3 38.Qa2 Qc2+ 39.Qxc2 Rxc2+ >>40.Kh3 Bf4 41.Bc4 and the sides agree to a draw. >> >>What white could do? > >*Fritz has this at +.50 for white. Nimzo calls it +.58 for white. Since white >has a pawn up and poor position this seems correct to me. The black e pawn is >weak and needs defending after Ba6 and then either Qc4 or Bc4. Qc4 may force >swapping queens. Bc4 followed by b3 saves the b pawn. There seems to be a lot >of chess to be played yet with options on both sides. A +.50 advantage is not >winning, it's just an advantage. The fact this game ended in a draw is not a >surprise to me but in the mean time white still has the extra pawn. >> > >>The only plan for white to get out of the pin is g4 g3,Kg2 but this weakens the >>white king. >> >*Very seldom in chess is there a "only plan". I don't understand the Kg2 since >g2 has a pawn on it. kg2 is only after moving g3 to g4 and g2 to g3. Do you have another plan for white to win the game? > >>After g4 Junior wants to play Rb8 and black gets the pawn back. > >*If the rook moves off the f file that kills the pin(Attackers vs Defenders). >Jim Walker I agree Rb8 is what Junior wants to play after g4 and it does not have to be the best move. I prefer h5 gxh5 gxh5 and now Junior's evaluation after some minutes is that the 2 best moves of white are g3 0.20 and Qc2 0.12 if Qxh5 Rxf2 and black has a draw. Uri
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