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

- And here's another problem for you (Knightshead4mate Revisited)!
**Paul***15:02:44 01/21/01*- Re: And here's another problem for you (Knightshead4mate Revisited)!
**Peter Berger***08:35:23 01/22/01*- Re: And here's another problem for you (Knightshead4mate Revisited)!
**Ed Schröder***09:51:54 01/22/01* - Re: And here's another problem for you (Knightshead4mate Revisited)!
**Paul***09:04:48 01/22/01*

- Re: And here's another problem for you (Knightshead4mate Revisited)!
- Re: And here's another problem for you (Knightshead4mate Revisited)!
**Tim Foden***01:55:42 01/22/01*- Re: And here's another problem for you (Knightshead4mate Revisited)!
**Paul***05:09:31 01/22/01*

- Re: And here's another problem for you (Knightshead4mate Revisited)!
- Re: And here's another problem for you (Knightshead4mate Revisited)!
**leonid***16:38:53 01/21/01*- Re: And here's another problem for you (Knightshead4mate Revisited)!
**leonid***17:19:09 01/21/01*- Re: And here's another problem for you (Knightshead4mate Revisited)!
**Paul***17:25:50 01/21/01*- Re: And here's another problem for you (Knightshead4mate Revisited)!
**leonid***17:57:16 01/21/01*- Re: And here's another problem for you (Knightshead4mate Revisited)!
**Paul***05:09:23 01/22/01*- Re: And here's another problem for you (Knightshead4mate Revisited)!
**leonid***09:32:02 01/22/01*

- Re: And here's another problem for you (Knightshead4mate Revisited)!

- Re: And here's another problem for you (Knightshead4mate Revisited)!

- Re: And here's another problem for you (Knightshead4mate Revisited)!

- Re: And here's another problem for you (Knightshead4mate Revisited)!
- Re: And here's another problem for you (Knightshead4mate Revisited)!
**Paul***16:47:59 01/21/01*

- Re: And here's another problem for you (Knightshead4mate Revisited)!

- Re: And here's another problem for you (Knightshead4mate Revisited)!

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