Author: Uri Blass
Date: 13:55:23 10/16/03
Go up one level in this thread
On October 16, 2003 at 16:08:11, Klaus Friedel wrote: >On October 16, 2003 at 10:02:58, Uri Blass wrote: > >>On October 16, 2003 at 09:18:27, Tord Romstad wrote: >> >>>On October 16, 2003 at 09:08:15, Lyn Harper wrote: >>> >>>> Why should it be moderately difficult? >>> >>>Simply because the combination is not really that deep. >>> >>>>Well, Chessmaster9000 could'nt solve it, just kept wanting to take the knight on >>>>e5 after glancing at the correct >>>>move for a nanosecond. Same with Ruffian. Good thing I did'nt offer $1 million >>>>to the first solver. :) >>>> And you come up with some obscure chess program, that I've never heard of, >>>> and get the solution. >>> >>>It's not so obscure to me, as it happens to be my own program. :-) >>> >>>I would guess that most strong programs finds the right move rather quickly, >>>but that CM9K and Ruffian have one of their few blind spots in this particular >>>position. >>> >>>Tord >> >>Your guess is wrong. >> >>most programs are different than your program and your program has some >>advantages relative to the top programs so the top programs cannot see the >>following line in a reasonable time: >> >>1. Nf6+ Kg7 2. Nh5+ Kg6 3. Bc2+ Kxh5 4. d8=Q Nf7+ 5. Ke6 Nxd8+ 6. Kf5 e2 7. >>Be4 e1=N 8. Bd5 c2 9. Bc4 c1=N 10. Bb5 Nc6 11. Bxc6 Nc7 12. Ba4 Nc2 13. >>Bxc2 Ne2 14. Bd1 c4 15. Bxe2# >>* >> >>They probably assume that black is winning because black has a big material >>advantage. >> >>I guess that your program extend moves that threat mate in 2 like >>10.Bb5 when other programs do not do it(even if they extend mate threat they may >>not do it in positions when the side to move has only a bishop and pawn because >>they were not designed to solve studies and in games it may be better not to >>waste time on checking it). >> >> >>Uri > >Whatever makes Gothmog special, Aristarch uses it as well. I wasn't able to find >any other programm being able to solve this one. Every program that does not search underpromotions can solve it but I believe that Gothmog is not one of the programs with that design decision Uri
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