Author: Paul
Date: 00:50:39 03/27/01
Go up one level in this thread
On March 26, 2001 at 22:01:17, Heiner Marxen wrote: >On March 26, 2001 at 19:11:34, Paul wrote: > >>1. c8N!! Rh8 2. Ne7 Nf2 3. Kxf2 Rg8 4. Ke3 Kh8 5. Kd4 Kh7 6. Kc5 Kh8 7. Kb6 Kh7 >>8. Kc7 Kh8 9. Kc8 Nh7+ 10. Nxg8 Kxg8 11. Kxd7 Kf8 12. Kc8 Nxg5 13. d7 Nf7 14. >>d8=Q+ Nxd8 15. Kxd8 Kf7 16. Kd7 Kf8 17. Kxe6 Ke8 18. g5 Kf8 19. Kd7 Kf7 20. e6+ >>Kg8 21. e7 Kh8 22. e8=N Kh7 23. Nxg7 Kxg7 24. Ke7 Kg8 25. Kf6 Kh7 26. Kf7 Kh8 >>27. Kxg6 Kg8 28. Kh6 Kf7 29. Kh7 Ke7 30. g6 Ke6 31. g7 Ke5 32. g8=Q Kd4 33. Qg4+ >>Kd3 34. Kg6 Ke3 35. Kg5 Kd3 36. Qb4 Ke3 37. Kg4 Ke2 38. Qd4 Kf1 39. Qd2 Kg1 40. >>Kg3 Kh1 41. Qg2# > >After 15...Kf7 Crafty 17.7 with 3&4 piece tables finds a mate in 17: <Partial log snips> > 21 0.92 Mat17 1. g5 Kf8 2. Kd7 Kf7 3. Kd6 Ke8 4. > Kxe6 Kd8 5. Kf7 <HT> >which results in #32, much shorter than yours. You're absolutely correct! I've just rerun Pretz and it says the same, don't know what happened ... except that I have a cold and really shouldn't post in this condition. ;) And it's a pity coz there was a nice minor promo at move 22 in my line above, forgot to mention that before! This I get now: 16. g5 Kf8 17. Kd7 Kf7 18. Kd6 Ke8 19. Kxe6 Kd8 20. Kf7 Kd7 21. e6+ Kd6 22. e7 Kd5 23. e8=Q Kd4 24. Kxg7 Kd3 25. Kxg6 Kd4 26. Qa4+ Kd3 27. Kf5 Ke3 28. Qd1 Kf2 29. Kf4 Kg2 30. Qe1 Kh2 31. Kf3 Kh3 32. Qh1# Hip Hip Hooray!! >One move earlier in your line crafty plays different: ><Partial log snip> > 24 22.52 Mat25 1. Kxd8 g5 2. Kd7 Kf7 3. Kd6 Kf8 4. > Kxe6 Ke8 5. Kf5 Kf7 6. Kxg5 Ke6 7. > Kf4 Ke7 8. Kf5 Kf7 9. e6+ Ke7 10. Kg6 > Kf8 11. g5 Ke8 12. Kxg7 <EGTB> > >This is a total depth of 14+25=39 Ok ... I'm really confused now as to what happened last night ... Pretz spits out the mates in record time now ... a hash table cold? I've heard of computer virusses, but computer bacteria? :) 15. Kxd8 g5 16. Kd7 Kf7 17. Kd6 Kf8 18. Kxe6 Ke8 19. Kf5 Kf7 20. Kxg5 Ke6 21. Kf4 Ke7 22. Kf5 Kf7 23. e6+ Ke7 24. Kg6 Kf8 25. g5 Ke7 26. Kxg7 Kxe6 27. Kh7 Ke5 28. g6 Kf5 29. g7 Ke5 30. g8=Q Kd4 31. Qg4+ Kd3 32. Kg6 Ke3 33. Kg5 Kd3 34. Qb4 Ke3 35. Kg4 Ke2 36. Qd4 Kf1 37. Qd2 Kg1 38. Kg3 Kh1 39. Qg2# >So, my impression is that white really wins, but the win is much deeper >than the initially given line, and also too deep for our programs to find >the shortest mate. Right ... but still ... I'll look at it some more today. >>Of course, as usual, I'm not totally convinced this is correct, but I think it's >>close :) Anyway, 8... Kh8 is a much tougher defence than 8... Rh8. >Yes, I agree. Aren't we smart guys? :-) In the light of the above ... I guess you're talking about your brain and my looks? ;) >Have a nice night, and a good sleep ;-) Well ... had a sleep, not a good one, but it seemed to have helped anyway. :) See ya, Heiner ... Paul
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