Author: Vincent Lejeune
Date: 09:58:01 06/29/02
Go up one level in this thread
On June 29, 2002 at 12:44:22, John Merlino wrote: >On June 28, 2002 at 02:56:42, Peter Berger wrote: > >>On June 27, 2002 at 23:00:34, John Merlino wrote: >> >>>On June 27, 2002 at 04:04:07, Vincent Diepeveen wrote: >>> >>>>Hello, >>>> >>>>Several positions in WM test the solutions given aren't the >>>>objective best moves. >>>> >>>>For example i get impression that at position 16: >>>> >>>> >>>>r1k4r/1b1q1pp1/p6p/3n4/1B3Pn1/1P1B4/P1PQ3P/2KRR3 w - - bm Ba5; id "CSS WM-Test >>>>16) Lb4-a5 (K)"; >>>> >>>>Undoubtfully Ba5 is a good move, but completely material >>>>winning is c2-c4 here. You get directly a rook at the 7th rank, >>>>swallow f7 + g7, and black is completely immobilized the rest of >>>>the game. Soon also Rd1-e1-e7 happens and it's a mate in XXX soon >>>>then. >>>> >>>>I can imagine why a human plays Ba5 here and doesn't take a risk (note >>>>the chessprograms want this all initially too), but let's look objective >>>>to the position. Not finding c4 soon means a program is a tactical joke. >>>> >>>>As a human i wouldn't find c4 so soon either. I would go for Ba5, because >>>>i know how much i suck in tactics. >>>> >>>>Best regards, >>>>Vincent >>> >>>Chessmaster 9000 appears to agree with you (this is on a PIII-600): >>> >>>Time Depth Score Positions Moves >>>0:00 1/4 -0.60 8372 1.Bc4 Ngf6 2.Bc5 Rd8 3.Qf2 >>>0:00 1/4 -0.57 9665 1.Be4 Ngf6 2.Bg2 Rd8 3.Bc5 >>>0:00 1/4 -0.55 11465 1.Ba3 Ngf6 2.Qf2 Re8 >>>0:00 1/5 -0.79 27109 1.Ba3 Ngf6 2.c4 Qc7 3.Bc2 Nxf4 >>>0:01 1/5 -0.73 53715 1.Bc3 Ngf6 2.Be5 Rd8 3.Qa5 Nc7 >>> 4.Bxf6 gxf6 5.Bxa6 >>>0:03 1/6 -0.43 145151 1.Bc3 Ngf6 2.Be5 Rd8 3.Qa5 Nc7 >>> 4.Bxa6 >>>0:04 1/6 -0.24 229476 1.Ba5 g6 2.c4 Ndf6 3.h3 Bf3 4.hxg4 >>> Bxd1 5.Rxd1 Qxg4 >>>0:05 1/7 -0.43 307905 1.Ba5 Kb8 2.c4 Ne7 3.h3 Nf6 4.Bb6 >>> Bf3 >>>0:11 1/8 -0.14 701435 1.Ba5 Bc6 2.c4 Ndf6 3.Qc2 Qa7 4.Bf5+ >>> Kb8 5.c5 Qb7 >>>0:18 1/8 0.00 1107218 1.c4 Nxb4 2.Qxb4 Qc7 3.Bf5+ Kb8 >>> 4.Bxg4 Qxf4+ 5.Kb1 Qxg4 6.Qd6+ >>> Kc8 7.Qc5+ Kb8 8.Qd6+ >>>0:31 1/9 0.39 2046289 1.c4 a5 2.Bxa5 Nc7 3.Qb4 Nf2 4.Re7 >>> Qxe7 5.Qxe7 Rxa5 >>>0:51 1/10 0.51 3523625 1.c4 a5 2.Bxa5 Nc7 3.Bb4 Ne6 4.f5 >>> Ng5 5.Qf4 Bf3 6.Re7 >>>1:37 2/11 0.50 7088155 1.c4 a5 2.Bxa5 Nc7 3.Bb4 Ne6 4.f5 >>> Ng5 5.Qf4 Bf3 6.Re7 Qc6 >>>7:13 3/12 0.63 32423345 1.c4 Nxb4 2.Qxb4 Nf6 3.Re7 Qc6 >>> 4.Rxf7 a5 5.Bf5+ Kb8 6.Qc3 Re8 >>> 7.Rxg7 Qb6 8.Re1 >>> >>>jm >> >>Could you let Chessmaster 9000 search for a longer time,please? Say 2 hours? I >>expect it to change its mind with more time. >> >>Peter > >Ok, Peter. Sorry I didn't get this message until today (Saturday) when I'm at >home without the latest version. I'll do this on Monday and then post the >results. > >jm Could you search with the best 2 moves ? so we could compare the score ...
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