Author: Uri Blass
Date: 12:40:30 08/14/00
Go up one level in this thread
On August 14, 2000 at 15:16:34, Christophe Theron wrote: >On August 14, 2000 at 15:00:26, Uri Blass wrote: > >>On August 14, 2000 at 14:53:31, Christophe Theron wrote: >> >>>On August 14, 2000 at 05:38:59, Alvaro Rodriguez wrote: >>> >>>>On August 14, 2000 at 02:47:26, Christophe Theron wrote: >>>> >>>>>On August 13, 2000 at 23:38:14, Peter Kappler wrote: >>>>> >>>>>>On August 13, 2000 at 23:04:06, robert blackwell wrote: >>>>>> >>>>>>>People should check out a position more carefully before claiming a move is bad. >>>>>>>bxa2 in the position given in the earlier post is the right move and it is the >>>>>>>move nd5 which loses as it breaks the pin on the d file preventing bxb3! any >>>>>> >>>>>> >>>>>>[D]3r1rk1/2p1Rppp/p4n2/1p1b4/3P4/3B3P/PPPN2P1/4R1K1 b - - 0 1 >>>>>> >>>>>>I think you might need to follow your own advice, because after Bxa2 b3 Bxb3 >>>>>>Nxb3 Black is lost. >>>>> >>>>> >>>>> >>>>>Actually the line is much more complicated than that. >>>>> >>>>>I believe that Bxa2 indeed loses, but playing b3 just after Bxa2 apparently does >>>>>not work. It is much much more complicated and deep. >>>>> >>>>> >>>>> Christophe >>>> >>>>I don´t think other moves are good here, only b3 is correct IMO >>>>Maybe you have seen something else? >>>> >>>>Regards, >>>>Alvaro >>> >>> >>>I have posted a 15 plies deep analysis in the other thread about this position. >>> >>>After b3 and 15 plies the black bishop was still there in good health and black >>>had still a good position. The only problem is the position of the bishop, but >>>this bishop also happens to be a pain for white as well... >>> >>>b3 is maybe correct, but that's not an obvioulsy winning move. White has still a >>>lot of work, and he has to be very careful. >>> >>>I don't like Bxa2, but it's not obviously losing as some would say. White has >>>some weak points to defend after that, and it is possible that the bishop can be >>>eventually exchanged against 3 pawns. >>> >>>Anyway, it's obvious that the bishop can be exchanged against 2 pawns, so it's >>>like losing one pawn overall for black if white plays perfectly. >> >>I agree that it is not clear if Bxa2 is a losing blunder but a bishop equals >>more than 3 pawns so losing a bishop for 2 pawns is worse than losing a pawn. >> >>Uri > > >But black gets a pawn majority on the queenside, and the a pawn is passed... > > > Christophe After Bxa2 b3 Bxb3 Nxb3 programs evaluates the position as clearly more than one pawn for black because inspite of the fact that black has a passed pawn on the queen side and pawn majority. Junior5 evaluates the position as more than 1.3 pawns for white and Junior5.9 is even more optimistics because one of the changes between Junior5 and Junior5.9 was a change in the value of the pawn(I have not Junior6 but I guess that the behaviour of it is similiar) and it evaluate the position after Bxa2 b3 Bxb3 Nxb3 as more than 1.8 pawns for white. Uri
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