Author: John Merlino
Date: 12:36:17 09/26/03
Go up one level in this thread
On September 26, 2003 at 14:56:04, m.d.hurd wrote: >On September 26, 2003 at 12:44:42, John Merlino wrote: > >>On September 26, 2003 at 12:29:09, Mihaly Szalai wrote: >> >>>I think most of the chess engines will show a positive score >>>(i.e. will find 4.h8=B) in this position except Junior. (We talked >>>about something similar earlier.) >>> >>>[D]8/7p/6pP/1B4P1/pp6/1k1K4/8/8 w - - 0 1 >>> >>>1. Be8 a3 2. Bxg6 hxg6 3. h7 a2 4. h8=B! >>> >>>You should try it with your engine. >>> >>>Thanks >>>Mihaly >> >>It takes Chessmaster 9000, on a P4-2.4, 2:38 to find 4.h8=B: >> >>Time Depth Score Positions Moves >>0:00 3/7 -0.75 10737 1.Be8 a3 2.Bxg6 Kb2 3.Bxh7 a2 4.Kc4 >> a1=Q 5.Kxb4 >>0:00 4/8 0.00 19788 1.Be8 a3 2.Bxg6 hxg6 3.h7 a2 4.h8=Q >> a1=Q 5.Qxa1 >>0:00 5/9 0.00 45957 1.Be8 a3 2.Bxg6 hxg6 3.h7 a2 4.h8=Q >> a1=Q 5.Qxa1 >>0:00 6/10 0.00 72363 1.Be8 a3 2.Bxg6 hxg6 3.h7 a2 4.h8=Q >> a1=Q 5.Qxa1 >>0:00 7/11 0.00 132774 1.Be8 a3 2.Bxg6 hxg6 3.h7 a2 4.h8=Q >> a1=Q 5.Qxa1 >>0:00 8/12 0.00 244835 1.Be8 a3 2.Bxg6 hxg6 3.h7 a2 4.h8=Q >> a1=Q 5.Qxa1 >>0:01 9/13 0.00 459719 1.Be8 a3 2.Bxg6 hxg6 3.h7 a2 4.h8=Q >> a1=Q 5.Qxa1 >>0:03 10/14 0.00 917335 1.Be8 a3 2.Bxg6 hxg6 3.h7 a2 4.h8=Q >> a1=Q 5.Qxa1 >>0:07 11/15 0.00 1887372 1.Be8 a3 2.Bxg6 hxg6 3.h7 a2 4.h8=Q >> a1=Q 5.Qxa1 >>0:15 12/16 0.00 4010653 1.Be8 a3 2.Bxg6 hxg6 3.h7 a2 4.h8=Q >> a1=Q 5.Qxa1 >>0:33 13/17 0.00 8912233 1.Be8 a3 2.Bxg6 hxg6 3.h7 a2 4.h8=Q >> a1=Q 5.Qxa1 >>2:38 14/18 3.11 37142500 1.Be8 a3 2.Bxg6 hxg6 3.h7 a2 4.h8=B >> Ka3 5.Kc2 b3+ 6.Kc1 Ka4 7.Kb2 Kb4 >> 8.Bg7 Kc4 9.Ka3 Kd5 10.Kxb3 Ke4 >> 11.Kxa2 Kf5 >> >>jm > > >Hello John > >I am surprised it takes so long. I get about 16 seconds on my Athlon xp2100. > >New game >8/7p/6pP/1B4P1/pp6/1k1K4/8/8 w - - 0 1 > >Analysis by The King 3.23: > >1.Be8 a3 2.Bxg6 hxg6 3.h7 a2 4.h8B Ka3 5.Kc2 b3+ 6.Kc1 Ka4 7.Kb2 Kb4 8.Bf6 Kc4 >9.Ka3 Kd3 10.Kxb3 >± (0.85) Depth: 15 00:00:16 5075kN >(26.09.2003) > > >Regards > >Mike I suspect you are using different personality settings than the default, which is what I used. This is evidenced by the difference in reported depth when the engine finds the move. jm
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