Author: Vincent Lejeune
Date: 17:16:56 01/11/00
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On January 11, 2000 at 19:07:51, Dann Corbit wrote: >On January 11, 2000 at 18:41:35, Andrew Walker wrote: >> >>For fun I picked one of the positions from your list at random and >>analysed it overnight on a 450Mhz machine using Crafty 17.5 >>The nps count seems a bit low, it may have been slowing down at the >>larger depths. Anyway, it shows that in this position crafty does eventually >>get to a more equal score. Is anyone willing to try this or others >>with crafty or other progs such as rebel? >[snip] >[D]r1bq1r1k/p4Ppp/1p3n2/2p1n3/2B5/2P1PN2/P3QPPP/R1B2RK1 b >[snip] >> 17 228:06 -0.46 1. ... Bg4 2. e4 Nh5 3. Bd5 Bxf3 4. >> gxf3 Ng6 5. Qd1 Nhf4 6. Bxf4 Nxf4 7. >> Kh1 Nxd5 8. exd5 Qf6 9. c4 Rxf7 <HT> >> 17-> 261:55 -0.46 1. ... Bg4 2. e4 Nh5 3. Bd5 Bxf3 4. >> gxf3 Ng6 5. Qd1 Nhf4 6. Bxf4 Nxf4 7. >> Kh1 Nxd5 8. exd5 Qf6 9. c4 Rxf7 <HT> >> 18 507:18 -0.48 1. ... Bg4 2. e4 Nh5 3. Bd5 Bxf3 4. >> gxf3 Ng6 5. Qd1 Nhf4 6. Bxf4 Nxf4 7. >> Kh1 Nxd5 8. exd5 Qf6 9. c4 Rxf7 10. >> Re1 Qc3 11. Rc1 Qxf3+ 12. Qxf3 Rxf3 >> 18-> 613:30 -0.48 1. ... Bg4 2. e4 Nh5 3. Bd5 Bxf3 4. >> gxf3 Ng6 5. Qd1 Nhf4 6. Bxf4 Nxf4 7. >> Kh1 Nxd5 8. exd5 Qf6 9. c4 Rxf7 10. >> Re1 Qc3 11. Rc1 Qxf3+ 12. Qxf3 Rxf3 >[snip] >Yes, exactly. Notice how the score is steadily dropping. The supercomputer >came up with about half that number: > >r1bq1r1k/p4Ppp/1p3n2/2p1n3/2B5/2P1PN2/P3QPPP/R1B2RK1 b - - bm Bg4; ce -28; > >Which is much more in line with what would be expected from theory (the position >is about even for a frequently played opening position). We will see this >behavior all the time for gambit type openings. It takes the computer a long >time to see the benefits (if it ever does). > >Thank you very much for looking into this for me. It is yet another >confirmation of my suspicions about the superiority of the supercomputer >solution. > >Interestingly, we are using only a tiny fraction of the supercomputer's true >power and the positions are only being run for a few minutes. Pretty awesome, >isn't it? Can we get tiny information about this mysterious supercomputer ? What king of CPU or how many CPU or what's the software ?
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