Author: John Merlino
Date: 10:53:24 03/14/00
Go up one level in this thread
On March 13, 2000 at 20:50:35, Dann Corbit wrote: >On March 13, 2000 at 19:57:06, Pete Galati wrote: >[snip] >>[D]r1bqr3/pp1n1ppk/3bp3/6N1/3p4/2P5/PP3PPP/R1BQR1K1 b - - > >This is actually a *very* interesting test position. > >Kg8 seems to score very well initially, but rapidly drops in value. >By ply 11, Kg6 goes nuts with a fail high. > >I wonder if any programs can see Kg6 before ply 11 because of extensions or >whatever. > >Indeed, a clever test position. CM7000 finds Kg6 at depth 3/8 (just under 7.5 million positions) after 3:07 on a PII-400, with an eval of -1.15 for Black. The eval only changes slightly when it switches from Kg8, which was -1.04. The line is: 1...Kg6 2.Re4 Qa5 3.Rg4 Bf8 4.b4 Qb5 5.Nxe6+ Kh7 6.Nxf8+ Nxf8 7.Rxd4 I let it think up to the next level (4/9), which it reached at 13:04 (32.2 million positions), and the eval was -1.14. The updated line is: 1...Kg6 2.Re4 Qa5 3.Rg4 Bf8 4.Qd3+ f5 5.Nxe6+ Kf6 6.b4 Qa6 jm
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