Author: Robert Hyatt
Date: 07:03:53 08/30/00
Go up one level in this thread
On August 30, 2000 at 09:32:28, Larry Griffiths wrote: >On August 30, 2000 at 08:59:51, Michel Langeveld wrote: > >>On August 30, 2000 at 08:35:26, Larry Griffiths wrote: >> >>>I am testing the following WAC position... >>> >>>[D]8/7p/5k2/5p2/p1p2P2/Pr1pPK2/1P1R3P/8 b - - bm Rxb2; id "WAC002"; >>> >>>My program keeps picking c3 so I figure it has a bug some where. >>> >>>What is the principle contiunation after Rxb2. I figure that it promotes a pawn >>>somehow. >>> >>>Larry :) >> >>The folowing data is in CAP: >> >> >>D:\>grep -i "8\/7p\/5k2\/5p2\/p1p2P2\/Pr1pPK2\/1P1R3P\/8" cap.epd >> >>8/7p/5k2/5p2/p1p2P2/Pr1pPK2/1P1R3P/8 b - - acd 14; acn 114206936; ce 322; pv Rxb >>2 Rxb2 c3 Rb6+ Ke7 Rb7+ Kd6 Rb6+ Kc5 Rb7 c2 Rxh7 d2 Rc7+ Kd6 Rxc2 d1=Q+ Re2 Qf1+ >> Rf2 Qd3 h4 Qxa3; pm Rxb2; bm Rxb2; id "WAC.002"; > >It looks like I must run this to 17 or 18 plys deep then. I thought the >promotion might occur before 17 or 18 plys. > >Thanks. >Larry :) If you do any kind of search extensions, you ought to pick the solution up at 11-12-13 plies or so. The problem is all the checks by white, after black gets the unstoppable pawns. A program can use those to push the promotion off a long way...
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