Author: Mike Byrne
Date: 13:14:31 03/14/04
Go up one level in this thread
On March 14, 2004 at 15:08:12, Steven Edwards wrote: >On March 14, 2004 at 14:28:36, John Merlino wrote: > >>On March 14, 2004 at 13:13:18, Art Basham wrote: >> >>>[D]7B/6N1/8/5B2/8/K7/pr6/k7 w - - 0 1 >>> >>>This may have more than one solution, and I am not sure if it is a forced mate >>>or not.. >>> >>>the book calls for: >>>1 Ka4...If Rb8, >>>2 Ne8+...etc. > >>I have verified that there is no forced mate in 14 moves. I suspect that there >>is a forced mate in somewhere between 20 and 25 moves, but no less. > >How about mate in 26: > >1. Ka4 Rh2 2. Nh5+ Rb2 3. Nf6 Rb8 4. Bg7 Ra8+ 5. Kb3 Ra3+ 6. Kc2 Rc3+ 7. Kd2 >Kb2 8. Nd5 a1=Q 9. Bxc3+ Ka2 10. Nb4+ Kb3 11. Be6+ Ka4 12. Bxa1 Kxb4 13. Bd4 >Kb5 14. Bd5 Kb4 15. Bb7 Ka5 16. Ba7 Ka4 17. Ba6 Ka5 18. Bd3 Ka4 19. Bc5 Ka5 20. >Kc3 Ka4 21. Bb6 Ka3 22. Bb5 Ka2 23. Kc2 Ka1 24. Ba4 Ka2 25. Bb3+ Ka1 26. Bd4# another solution white black 1 Ka4 Rh2 2 Nh5+ Rb2 3 Nf6 Rb8 4 Bg7 Ra8+ 5 Kb3 Ra3+ 6 Kc2 Rc3+ 7 Kd2 Kb2 8 Nd5 a1=Q 9 Bxc3+ Ka2 10 Nb4+ Kb3 11 Bxa1 Kxb4 12 Be6 Kc5 13 Be5 Kc6 14 Ke3 Kc5 15 Bf4 Kb4 16 Kd4 Kb5 17 Bd7+ Kb4 18 Bd2+ Kb3 19 Kd3 Kb2 20 Be8 Kb3 21 Bc3 Ka3 22 Kc2 Ka2 23 Bg7 Ka3 24 Bf8+ Ka2 25 Bf7+ Ka1 26 Bg7# ...
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