Author: blass uri
Date: 11:35:46 08/07/00
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On August 07, 2000 at 14:17:32, Jari Huikari wrote: >On August 06, 2000 at 07:12:21, blass uri wrote: > >>On August 06, 2000 at 06:54:57, Carlo Meier wrote: >> >>>Ra2+ ist not the right move... :) >>> >>>greeting: Carlo >> >>Do you mean that Ra2 does not win or that it does not win in the shortest way? >> >>I think that rook and a bishop win against bishop and a pawn. >>White cannot take the pawn but may drive black king into the corner >> >>Uri > >How about moving Rh1 and then Nf4 ? > > Jari I also thought about this line but did not see a clear win when I analyzed with a computer after some minutes. The problem is that the black bishop can be in the diagnol h5-d1 and I do not see a way for white to get to the right square with the knigh. I admit that 1.Ra2+ Kh3 2.Ng5+ Kg3 3.Be5+ f4 is good for black and it is surprising that some programs(including crafty with no tablebases) believe that a piece advantage after sacrificing the rook for 2 pawns is more than 4 pawns advantage I believe that only material counting programs with no tablebases can see a main line with an endgame with a piece advantage but some programs have evaluation function that is worse than only material evaluation in this case and they prefer to go for position with rook for a pawn adavntage for white and not a knight advantage. Junior5.9 has better evaluation and it evaluate the position as close to +1 for white and does not see win for white. Uri
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