(for Guy Haworth?) Shortest legal mate
Posted: Thu Aug 30, 2007 7:05 pm
Hi,
I want to use John Tamplin's DTZ50 EGTB in http://chess.jaet.org/endings,
in order to obtain the shortest legal mate (of course with Black's best defense) for the following KNNKP position:
6k1/8/8/1N3p2/6K1/6N1/8/8 w
6k1/8/8/1N3p2/6K1/6N1/8/8 w
The DTM EGTB shows that it is a mate in 55, ignoring the 50-move rule.
How do you combine the results of the DTZ50 and DTM EGTBs to find that shortest legal mate?
Note: I found this, but I am not sure it is correct... (curiously, it is also a mate in 55, not more)
[Event "?"]
[Site "?"]
[Date "2007.08.26"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "6k1/8/8/1N3p2/6K1/6N1/8/8 w - -"]
1. Kf4 Kf7 2. Nd4 Ke7 3. Ke5 f4 4. Ngf5+
Kd7 5. Nf3 Kc6 6. Kd4 Kb5 7. Ne7 Kb6 8. Kd5 Kb5 9. Nc6 Ka6
10. Ncd4 Kb7 11. Nb5 Kb6 12. Nd6 Kc7 13. Nc4 Kd7 14. Nb6+
Kc7 15. Kc5 Kb7 16. Nd5 Kc8 17. Kc6 Kd8 18. Kd6 Kc8
19. Nb6+ Kb7 20. Nd7 Ka6 21. Kc6 Ka5 22. Nde5 Ka4 23. Kc5
Kb3 24. Nc6 Kc3 25. Nb4 Kb3 26. Nd5 Ka3 27. Nc3 Kb2 28. Kb4
Kc2 29. Kc4 Kc1 30. Nb5 Kb2 31. Nbd4 Ka2 32. Kc3 Ka3
33. Nb3 Ka2 34. Nc5 Ka3 35. Kc4 Kb2 36. Nd3+ Kc2 37. Nf2
Kb2 38. Nd2 Ka3 39. Kb5 Kb2 40. Kb4 Kc2 41. Nde4 Kb2
42. Ka4 f3 43. Kb4 Ka2 44. Kc3 Ka3 45. Nc5 Ka2 46. Nd7 Ka3
47. Nb6 Ka2 48. Nc4 Kb1 49. Kd2 Ka2 50. Kc2 Ka1 51. Kb3 Kb1
52. Nd3 Ka1 53. Nd2 f2 54. Nb4 f1=Q 55. Nc2# *
I want to use John Tamplin's DTZ50 EGTB in http://chess.jaet.org/endings,
in order to obtain the shortest legal mate (of course with Black's best defense) for the following KNNKP position:
6k1/8/8/1N3p2/6K1/6N1/8/8 w
6k1/8/8/1N3p2/6K1/6N1/8/8 w
The DTM EGTB shows that it is a mate in 55, ignoring the 50-move rule.
How do you combine the results of the DTZ50 and DTM EGTBs to find that shortest legal mate?
Note: I found this, but I am not sure it is correct... (curiously, it is also a mate in 55, not more)
[Event "?"]
[Site "?"]
[Date "2007.08.26"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "6k1/8/8/1N3p2/6K1/6N1/8/8 w - -"]
1. Kf4 Kf7 2. Nd4 Ke7 3. Ke5 f4 4. Ngf5+
Kd7 5. Nf3 Kc6 6. Kd4 Kb5 7. Ne7 Kb6 8. Kd5 Kb5 9. Nc6 Ka6
10. Ncd4 Kb7 11. Nb5 Kb6 12. Nd6 Kc7 13. Nc4 Kd7 14. Nb6+
Kc7 15. Kc5 Kb7 16. Nd5 Kc8 17. Kc6 Kd8 18. Kd6 Kc8
19. Nb6+ Kb7 20. Nd7 Ka6 21. Kc6 Ka5 22. Nde5 Ka4 23. Kc5
Kb3 24. Nc6 Kc3 25. Nb4 Kb3 26. Nd5 Ka3 27. Nc3 Kb2 28. Kb4
Kc2 29. Kc4 Kc1 30. Nb5 Kb2 31. Nbd4 Ka2 32. Kc3 Ka3
33. Nb3 Ka2 34. Nc5 Ka3 35. Kc4 Kb2 36. Nd3+ Kc2 37. Nf2
Kb2 38. Nd2 Ka3 39. Kb5 Kb2 40. Kb4 Kc2 41. Nde4 Kb2
42. Ka4 f3 43. Kb4 Ka2 44. Kc3 Ka3 45. Nc5 Ka2 46. Nd7 Ka3
47. Nb6 Ka2 48. Nc4 Kb1 49. Kd2 Ka2 50. Kc2 Ka1 51. Kb3 Kb1
52. Nd3 Ka1 53. Nd2 f2 54. Nb4 f1=Q 55. Nc2# *