Author: Kurt Utzinger
Date: 14:47:23 07/15/03
Go up one level in this thread
On July 15, 2003 at 16:07:44, George Tsavdaris wrote:
>On July 15, 2003 at 15:21:17, Robert Hyatt wrote:
>
>>Here is a position reached in a game on ICC between Crafty and an
>>unnamed opponent:
>>
>>[D]8/2k2p2/7p/ppPK4/6P1/P6P/8/8 w 0 1
>>
>>This seems like a simple "distant passed pawn" idea where black's king isss
>>closer to the remaining pawns after the queen-side pawns are all gone. I'd
>>hope not many would play c6 and lost instantly, but at least one commercial
>>engine does. Goes to show that _anything_ can happen in a comp vs comp
>>game of chess. :)
>>
>Deep Junior 8 makes ~4 minutes in a PIV 1500MHz to see c6 is losing and
>it's the first choice, until it sees Ke5 or Ke4. So in time control of
>120'/40+120'/40, in my computer, it would PROBABLY play the wrong move,
>but in a fast Dual/Quad it wouldn't.
Amazing ... on my P4 1.8/48 MB hash, Junior8 single CPU just
requires 1 second to throw away the losing move c6. Below the
corresponding analysis:
Neue Partie
8/2k2p2/7p/ppPK4/6P1/P6P/8/8 w - - 0 1
Analysis by Junior 8:
1.c6 b4 2.axb4 axb4 3.Kc4 Kxc6 4.Kxb4 Kd7
² (0.65) Tiefe: 3 00:00:00
³ (-0.30) Tiefe: 9 00:00:00 4kN
1.h4 a4 2.Kd4 Kc6 3.h5 f6 4.Ke4 Kxc5 5.Kf5 Kd5 6.Kxf6 Kd6
² (0.66) Tiefe: 9 00:00:00 6kN
= (-0.15) Tiefe: 18 00:00:01 1216kN, tb=43
1.c6 b4 2.axb4 axb4 3.Kc4 Kxc6 4.Kxb4 Kd5 5.Kc3 Ke4 6.Kc4 f6
= (-0.04) Tiefe: 18 00:00:01 1329kN, tb=63
1.Ke4 Kd7 2.Ke5 Kc6 3.Kd4 Kb7
= (0.00) Tiefe: 18 00:00:02 1688kN, tb=104
= (0.00) Tiefe: 30 00:03:51 133376kN, tb=107832
(Utzinger, MyTown 15.07.2003)
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.