Author: John Merlino
Date: 09:17:28 04/05/02
Go up one level in this thread
On April 05, 2002 at 11:20:01, Oliver Roese wrote: >Hi! > >This position is from >http://www.cs.ualberta.ca/~tony/RecentPapers/report.mac.pdf >(see also http://www.talkchess.com/forums/1/message.html?221364) > >[D]5k1b/7P/2B1KP1P/8/8/p7/P7/8 w - - 0 1 > >The author writes: >"After more than ten hours of play the position in [figure 9] was reached and >since >neither side was making progress the game was adjudicated after white's 111th >move of Bc6-d5. " >... >"Even today I doubt if many programs can do any better." > >I tested this somewhat with crafty and can confirm it . >Although this is a rather easy win for a human it is hard for an engine, >since the winning plan distracts several heuristics. In order to win, white has >to: >1) playing f7(Be8), thereby giving more room for the enemy pieces. >2) moving his king far away from the hotspot to the innocent looking pawn a3. >3) trading the "dangerous" pawn h7 against blacks pawn a3. Chessmaster 9000 (pre-Beta version) completely solves it in 2:57 on a PIII-733 (although it sees 7.h8=Q Bxh8 8.Kxa3 after 29 seconds): Time Depth Score Positions Moves 0:07 12/13 3.01 1138091 1.Bd5 Ke8 2.f7+ Kf8 3.Kd7 Bf6 4.Kc6 Bh8 5.Kb5 Bc3 6.Ka4 Bb2 7.Kb4 Ke7 8.Kc5 Kf8 0:10 13/14 3.19 1686021 1.Bd5 Ke8 2.f7+ Kf8 3.Kd7 Bf6 4.Kc6 Bh8 5.Kb5 Bc3 6.Bc4 Bh8 7.Kb4 Bb2 8.Bb3 Ke7 0:17 14/15 2.99 2840357 1.Bd5 Ke8 2.f7+ Kf8 3.Kd7 Bf6 4.Kc6 Bh8 5.Kb5 Bc3 6.Bc4 Bh8 7.Kc6 Ke7 8.Kc5 Bf6 9.Kb4 0:22 15/16 3.19 3749955 1.Bd5 Ke8 2.f7+ Kf8 3.Kd7 Bf6 4.Kc6 Bh8 5.Kb5 Bc3 6.Bc4 Bh8 7.Kc6 Ke7 8.Kc5 Bc3 9.Be6 Be5 0:29 16/17 3.17 5069003 1.Bd5 Ke8 2.f7+ Kf8 3.Kd7 Bf6 4.Kc6 Bh8 5.Kb5 Bc3 6.Ka4 Bb2 7.h8=Q+ Bxh8 8.Kxa3 Bf6 9.h7 Ke7 10.Kb4 Be5 11.a4 Bh8 12.a5 0:36 17/18 3.27 6335927 1.Bd5 Ke8 2.f7+ Kf8 3.Kd7 Bf6 4.Kc6 Bh8 5.Kb5 Bc3 6.Ka4 Bb2 7.h8=Q+ Bxh8 8.Kxa3 Bf6 9.h7 Be7+ 10.Kb3 Kg7 11.Be4 Bd6 12.a4 Bc5 13.a5 0:45 18/19 3.49 7840971 1.Bd5 Ke8 2.f7+ Kf8 3.Kd7 Bf6 4.Kc6 Bh8 5.Kb5 Bc3 6.Ka4 Bb2 7.h8=Q+ Bxh8 8.Kxa3 Bf6 9.Kb3 Be7 10.a4 Bd6 11.a5 Bc5 12.a6 0:59 19/20 3.53 9988197 1.Bd5 Ke8 2.f7+ Kf8 3.Kd7 Bf6 4.Kc6 Bh8 5.Kb5 Bc3 6.Ka4 Bb2 7.h8=Q+ Bxh8 8.Kxa3 Bf6 9.Kb3 Be7 10.a4 Bd6 11.Kc4 Bb8 12.h7 Be5 13.a5 1:18 20/21 3.86 12780749 1.Bd5 Ke8 2.f7+ Kf8 3.Kd7 Bf6 4.Kc6 Bh8 5.Kb5 Bc3 6.Ka4 Bb2 7.h8=Q+ Bxh8 8.Kxa3 Bf6 9.Kb3 Be7 10.a4 Bd6 11.a5 Bc5 12.a6 Bd4 13.h7 Bh8 14.Kc4 2:57 21/22 11.99 24100416 1.Bd5 Ke8 2.f7+ Kf8 3.Kd7 Bf6 4.Kc6 Bh8 5.Kb5 Bc3 6.Ka4 Bb2 7.h8=Q+ Bxh8 8.Kxa3 Bf6 9.Kb3 Be7 10.a4 Bc5 11.a5 Bd6 12.h7 Kg7 13.h8=Q+ Kxh8 14.a6 Kg7 15.a7 Kf6 16.a8=Q jm
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