Author: Pete Galati
Date: 07:03:19 07/04/99
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On July 04, 1999 at 01:47:51, Gerrit Reubold wrote: >On July 03, 1999 at 19:48:49, Pete Galati wrote: > >>On July 03, 1999 at 19:16:59, Gerrit Reubold wrote: >> >>>Hi all, >>> >>>please test your programs with the following position >>> >>>5rk1/1r3pp1/pp2pq2/3p4/3Q4/1PR5/P4PPP/4R1K1 w - - >>> >>>it is from a game which my program (Bringer) lost with white against The Crazy >>>Bishop. The draw is very easy to see (for humans): Qxf6 gxf6, and then rook >>>checks at h3, g3, f3... How long does your program take to find Qxf6 *with a >>>draw score*. How many plies / seconds? Question to the programmers: What do you >>>do to solve such positions fast? Extending on checks is not enough, my program >>>needs a 12 ply search (8 minutes on a PII-300) to find the draw (Qxf6 is found >>>earlier). >>> >>>Greetings, >>>Gerrit Reubold >> >>Every program that I ran that posistion through, Crafty, Comet, Phalanx and your >>Bringer all responded with QxQ. What did Bringer play in that game? I like >>Bringer allot, it works well with Winboard and it also has a very good interface >>of it's own. >> >>Pete > >Bringer likes Qd3 for some minutes, because I have a rule not to trade pieces >when behind in material, especially not when the opponent king is (a bit) less >safe. The Question was: how long do the other programs need to find the draw, >not only the key move. I tested Fritz5.16, the draw was seen instantly, >impressive. Hiarcs 6 does like QxQ instantly, but needs some minutes to see the >draw. >BTW: isn't QxQ a blunder as long as you don't see the draw, trading to an >endgame a pawn down? > >Greetings >Gerrit Judging it as a human player, and to be honest I didn't observe how long it took any of those programs to find a draw (I just had them play the next move), I think that QxQ is the correct move because then PxQ so R-kt3ch and the King has to move to the Rook file. But now because of the blacks pawn placement, I see no easy way to a checkmate, maybe a stronger player would, but I don't see it. I'm thinkink that the black King has to be sweating right now :-) I don't see it as a draw game, I see white winning this one, King safety is gone for the black side. Pete
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