Author: Dan Ellwein
Date: 15:00:52 09/24/00
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On September 24, 2000 at 17:09:09, Vincent Diepeveen wrote: >On September 24, 2000 at 16:06:57, Dan Ellwein wrote: > >>On September 24, 2000 at 10:42:01, Harald Faber wrote: >> >>>I'd suggest 30mins. >>> >>>[D]rnbqr1k1/pp2bppp/4p3/2ppP3/3P3P/2NB1N2/PPP2PP1/R2QK2R w KQ - bm Bd3h7;id >>>Faber-Lautenschuetz; >> >>Harold >> >>Can you give the move sequence after Bxh7... > >It's very deep to see, basically you need to start with > >Bxh7 kxh7 ng5 bxg5 hxg5 kg8 qh5 kf8 g6 ke7 gf rf8 dxc5 > >And only then diep starts seeing the problems getting a draw score >at ply=9, and desperately playing Na6 in the end with a near to >draw score, most likely failing low the ply after it. >g7 goes away f7 goes away, >sacrafices on d5 in all mainlines, and after long castling white plays with >some pieces more, but before you see those effectively penetrate the position >you're another 10 ply further. After the above sequence i still have >a draw score for Qa5 at ply==11, it's hard to blame evaluation, but that's >only way to find this combination. Basically you need to get an optimistic >score for white as the root position is optimistically evaluated for >white. So black needs to see big troubles before it will consider playing >Bxh7. 20 plies or so? > >>thanks thanks Vincent for the analysis... CM7 playing against itself starting with Bxh7 produces the following: ... Kxh7 Ng5+ Kg8 Qh5 Bxg5 hxg5 Kf8 g6 Ke7 gxf7 Rf8 0-0-0 Nc6 dxc5 b6 Qg6 Rxf7 Rh7 (after this move the evaluation for White goes to > +2.00) >> >>PilgrimDan
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