Author: Harald Faber
Date: 21:33:45 09/24/00
Go up one level in this thread
On September 24, 2000 at 19:25:49, Bruce Moreland wrote: >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? > >Mine plays this within a few seconds and it gets as far as ... Ke7 with an >approximately even score. So it's "solving" this with eval. > >If you play your whole like out it's still hard to see the win. I get O-O-O >after that and some fiddling around with a plus score but no concrete win. > >bruce Maybe there is no forced win but white gets strong attack and advantage that SHOULD lead to a win.
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