Author: Uri Blass
Date: 08:37:27 06/16/01
Go up one level in this thread
On June 16, 2001 at 08:50:27, Steven J. Brann wrote: >On June 16, 2001 at 08:30:19, leonid wrote: > >>Hi! >> >>I am not sure how deep this position is but it look like that only strong >>program will find it easy. >> >>[D]3K4/1Q1Q1Q2/Q1R1R1Q1/2N1N3/Q1qBNqQ1/q1qBRq1q/brnq1nrb/3kq3 w - - >> >>Please indicate your result. >> >>Thanks, >>Leonid. > >Chessmaster 8000 finds the mate but it took longer than it usually does for your >positions, 4:50 on a PIII 933. > >Time Depth Score Positions Moves >0:00 1/3 19.45 52935 1. Nxc3+ Qcxc3 2. Rxe1+ Qxe1 3. > Bxc2+ Kc1 4. Bxc3 Rxg4 5. Bxb2+ > Qxb2 6. Nxf3 Qhxf3 >0:27 1/4 27.23 2248065 1. Nxc3+ Qaxc3 2. Rxe1+ Qxe1 3. > Bxc2+ Qxc2 4. Bxb2+ Nd3 5. Qdxd3+ > Qed2 6. Nxf3 Qcxd3+ 7. Qgxd3 >1:19 2/5 30.51 6857417 1. Nxc3+ Qaxc3 2. Rxe1+ Qxe1 3. > Bxc2+ Qxc2 4. Bxb2+ Nd3 5. Qgxd3+ > Rd2 6. Qdxf3+ Qhxf3 7. Qxf3+ Qee2 > 8. Nxc4 Qexf3 9. Qxc2+ Kxc2 10. > Qxa2 >4:50 2/6 Mate10 25540594 1. Nxc3+ Qaxc3 2. Rxe1+ Qxe1 3. > Bxc2+ Qxc2 4. Bxb2+ Nd3 5. Qgxd3+ > Rd2 6. Qaxc2+ Qxc2 7. Qgxf3+ Qfxf3 > 8. Qdxf3+ Qxf3 9. Qxf3+ Qe2 10. > Qfxe2# >8:43 3/7 Mate10 41570060 1. Nxc3+ Qaxc3 2. Rxe1+ Qxe1 3. > Bxc2+ Qxc2 4. Bxb2+ Nd3 5. Qgxd3+ > Rd2 6. Qaxc2+ Qxc2 7. Qgxf3+ Qfxf3 > 8. Qdxf3+ Qxf3 9. Qxf3+ Qe2 10. > Qfxe2# > >Steve I suspect that you should try to increase the value of the ss parameter(selective search). Using the default value is a mistake and I know that chessmaster6000 is usually faster with ss=10 so I believe that the same is truth for chessmaster8000. My experience tells me that with ss=10 I never see depthes like 2/5 or 3/7 but only 1/5 and usually also 1/7 so I guess that you used the default ss=6. Uri
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