Author: Peter Berger
Date: 23:56:42 06/27/02
Go up one level in this thread
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
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