Author: leonid
Date: 14:25:53 01/21/01
Go up one level in this thread
On January 21, 2001 at 16:56:42, Paul wrote: >On January 21, 2001 at 11:56:09, leonid wrote: > >>Hi! >> >>This mate position is very handy when you want to check the limits in your >>program. It is amusing also. Number of legal moves for both sides is slightly >>over one hundred. >> >> knq3q1/rq1q1qbQ/Qq2Q3/1Qn1Q2B/Q1qN1Q1r/4K1B1/1q4QR/1N1q3Q white to go. >> >>If you will solve, it will be nice if you will indicate your result. >> >>Thanks, >>Leonid. > >Hi again Leonid! > >It took my program 45 minutes ... phewwwwwww! >Here's the line, a mate in 12: If you program found mate in 12 moves ahead, in this situation, it is rock solid! >1. Qxa7+ Qxa7 2. Qxa7+ Kxa7 3. Qeb6+ Ka8 4. Qgxb7+ Qdxb7 5. Qxb8+ Qxb8 >6. Qxb8+ Qxb8 7. Q6a5+ Na6 8. Qaxa6+ Qa7 9. Qg8+ Bf8 10. Qxf8+ Qe8+ >11. Qfxe8+ Qc8 12. Qxc8x > >I think I'm going to skip your next problem, that will be too difficult >for me ;) This was surprise for me! Only when Heiner found that there is no mate in 10 that I understood that this position is very deep. My program will never see all those 12 moves completely. Too much time. I create all my positions by using my selective search. I try to find what is the minimum number of moves that lead to the mate but not beyond 6. For this I should have, at least, better computer and hash in my program. Greetings, Leonid. >Greetings, >Paul
This page took 0.03 seconds to execute
Last modified: Thu, 07 Jul 11 08:48:38 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.