Author: Uri Blass
Date: 00:23:11 04/20/03
Go up one level in this thread
On April 20, 2003 at 02:41:51, Terry McCracken wrote: >On April 19, 2003 at 23:19:09, Robert Hyatt wrote: > >>On April 19, 2003 at 18:59:09, Terry McCracken wrote: >> >>>On April 19, 2003 at 16:15:33, Jorge Pichard wrote: >>> >>>>Great we know that most of these programs are rated at least 2500, but what is >>>>the lowest rated program that can still solve it. Is it BAM BAm or possibly >>>>Movei or Chess Genius 3? >>> >>>I solved this diagram some twenty years ago, and about 13 years ago I gave it to >>>the Mach III master, a dedicated unit on a Motorola 68000 16 bit processor at 16 >>>mgh. It solved it. Yes I know, not a programme on a PC. >>> >>>I can run the test again to see how long it took. I believe it wasn't very long? >>> >>>The Mach III also solved this problem in a relatively short order! >>> >>>I'm betting many software programmes will not see the draw as quickly as the >>>old Mach III! >>> >>>[D]8/r7/8/5bk1/8/5B2/5RPP/6K1 b >>> >>>Terry >> >>Crafty sees this instantly: >> >> 4-> 0.05 2.00 1. ... Ra1+ 2. Rf1 Ra2 3. g3 Rd2 >> 5 0.05 ++ 1. ... Ra1+!! >> 5 0.06 0.00 1. ... Ra1+ 2. Rf1 Rxf1+ 3. Kxf1 Bh3 >> 4. gxh3 Kg6 5. Kf2 >> 5-> 0.07 0.00 1. ... Ra1+ 2. Rf1 Rxf1+ 3. Kxf1 Bh3 >> 4. gxh3 Kg6 5. Kf2 >> 6 0.08 0.00 1. ... Ra1+ 2. Rf1 Rxf1+ 3. Kxf1 Bh3 >> 4. gxh3 Kg6 5. Kf2 Kg5 >> 6-> 0.09 0.00 1. ... Ra1+ 2. Rf1 Rxf1+ 3. Kxf1 Bh3 >> 4. gxh3 Kg6 5. Kf2 Kg5 >> 7 0.24 0.01 1. ... Ra1+ 2. Rf1 Rxf1+ 3. Kxf1 Bh3 >> 4. gxh3 <EGTB> > >Good Job! I should test all my chess software on this ending, to see if they >"understand" the draw with a passed pawn or doubled pawns on the h-file with the >wrong coloured Bishop. > >But remeber, the Mach III is slow and old, with no EGTB and solves this position >quickly! > >Dan Spracklen had to give it some endgame understanding in the code; Which to me >says what could he have come up with, had he remained creative in the world of >CC? I believe he ended his chess programming career in 1994 when his last >programme was for Saiteck. > >Terry I think that every programmer can teach his(her) program to have that knolwedge if (s)he is interested in it. The only question is if it it is important enough for the programmer. I guess that a future movei will have this knowledge but I have no specific date that I promise to do it. Uri
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