Author: Uri Blass
Date: 23:56:52 08/11/02
Go up one level in this thread
On August 11, 2002 at 19:43:22, Mike S. wrote: >On August 11, 2002 at 19:24:25, Uri Blass wrote: > >>On August 11, 2002 at 18:59:28, Telmo Escobar wrote: >> >>>On August 11, 2002 at 15:00:59, Uri Blass wrote: >>>(...) >>>>After 19.Rxc6 Bxa5 20.Rcd6 is not winning because of Rd8 when >>>>Rd7 is impossible so this example only demonstrates pharoan's wealnesses. > >>> If 19.Rxc6 Bxa5 20.Rcd6 Rd8 21.e5 I think White has a clear positional >>>advantage > >>I think that white has no advantage. >>after 21.e5 I play Rxd6 and black has a small advantage based >>on Deep Fritz. > >When I analysed 20...Rd8 a bit, it seemed to me that white should exchange on d8 >before playing e5: 19.Rxc6 Bxa5 20.Rcd6 Rd8 21.Rxd8+ Bxd8 22.e5 > >Maybe that's better - but complicated (I'm not sure, didn't analyse long >enough). I remember Fritz 7 wanted to reply Bc7, planning to exchange b7 for e5 >indirectly... > >Btw. the main reason why I "instinctively" chose Rxc6 as an example, is because >it is what I call an entertaining move (surprising and difficult enough, and >most probably correct), but I did not at all "dig into the truth of the >position". :o) Rxc6 is not hard for computers and the proof is that movei needs less than 2 seconds to find it on p850 and the same is for Deep Fritz,Junior7 and Crafty. Here is the analysis of movei at depth 7 7 -35 94 125600 a5b4 d8g5 b4d2 g5d2 d1d2 a8d8 d2d8 e8d8 g1g2 7 -34 181 247556 c1c6 7 -5 192 269564 c1c6 d8a5 e4e5 a8d8 c6d6 d8d6 e5d6 b7b6 f3c6 e8d8 7 -5 192 272111 c1c6 d8a5 e4e5 a8d8 c6d6 d8d6 e5d6 b7b6 f3c6 e8d8 Uri
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