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Subject: Re: Simplifications and endgame technique

Author: Robert Hyatt

Date: 19:56:44 01/05/99

Go up one level in this thread


On January 05, 1999 at 21:49:10, Albert Silver wrote:

>This game was played today:
>
>Of note (apart from Morozevitch's monstrous 8/9 - lad has a knack for monstrous
>scores doesn't he?) were a couple of moves. How many computers see that
>44...Qxc3 would lose (and how long does it take them to see it)? And how long
>does it take them to see the winning 45.h5!


question 1:   a fraction of a second.  (!)              depth   time  score
variation (1)
starting thread 1
starting thread 2
starting thread 3
                1     0.00   0.98   44. ... Qxc3
                1->   0.00   0.98   44. ... Qxc3
                2     0.00     --   44. ... Qxc3
                2     0.00   0.23   44. ... Qxc3 45. Qg5+ Ke6 46. g4
                2->   0.01   0.23   44. ... Qxc3 45. Qg5+ Ke6 46. g4
                3     0.02   0.32   44. ... Qxc3 45. Qg5+ Ke6 46. Qh6+
                                    Kf5 47. g3
                3->   0.02   0.32   44. ... Qxc3 45. Qg5+ Ke6 46. Qh6+
                                    Kf5 47. g3
                4     0.03   0.38   44. ... Qxc3 45. Qd1 d4 46. g4
                4->   0.04   0.38   44. ... Qxc3 45. Qd1 d4 46. g4
                5     0.05   0.37   44. ... Qxc3 45. g3 Qd2+ 46. Kh3 e4
                                    47. Qd7
                5->   0.07   0.37   44. ... Qxc3 45. g3 Qd2+ 46. Kh3 e4
                                    47. Qd7
                6     0.08     --   44. ... Qxc3
                6     0.11  -0.09   44. ... Qxc3 45. Qf3+ Qxf3 46. gxf3
                                    d4 47. a5 d3 48. a6 d2 49. a7 d1=Q
                                    50. a8=Q Qd4
                6->   0.16  -0.09   44. ... Qxc3 45. Qf3+ Qxf3 46. gxf3
                                    d4 47. a5 d3 48. a6 d2 49. a7 d1=Q
                                    50. a8=Q Qd4
                7     0.20  -0.20   44. ... Qxc3 45. Qf3+ Qxf3 46. gxf3
                                    d4 47. a5 d3 48. a6 d2 49. a7 d1=Q
                                    50. a8=Q Qe2+ 51. Kg3 Kf5
                7->   0.30  -0.20   44. ... Qxc3 45. Qf3+ Qxf3 46. gxf3
                                    d4 47. a5 d3 48. a6 d2 49. a7 d1=Q
                                    50. a8=Q Qe2+ 51. Kg3 Kf5
                8     0.53  -0.21   44. ... Qxc3 45. Qf3+ Qxf3 46. gxf3
                                    d4 47. a5 d3 48. a6 d2 49. a7 d1=Q
                                    50. a8=Q Qd2+ 51. Kh3 Qd7+ 52. Kg3
                                    Kf5
                8->   0.78  -0.21   44. ... Qxc3 45. Qf3+ Qxf3 46. gxf3
                                    d4 47. a5 d3 48. a6 d2 49. a7 d1=Q
                                    50. a8=Q Qd2+ 51. Kh3 Qd7+ 52. Kg3
                                    Kf5
                9     0.90     --   44. ... Qxc3
                9     1.65  -1.52   44. ... Qxc3 45. Qf3+ Qxf3 46. gxf3
                                    d4 47. Kg1 d3 48. Kf2 Ke7 49. Ke3 e4
                                    50. fxe4
                9     2.56  -1.15   44. ... e4 45. Qg3 Qd1 46. Qd6+ Kf5
                                    47. Qd7+ Kg6 48. c4 Qh5 49. Qc6+ Kg7
                                    50. cxd5 Qxh4+
                9     4.09     ++   44. ... Ke7!!
                9->   8.44  -0.76   44. ... Ke7
               10    12.47  -0.70   44. ... Ke7 45. Qg3 Qe4 46. a5 Ke6
                                    47. a6 Qa4 48. Qd3 e4 49. Qe2 Qd7
               10->  15.58  -0.70   44. ... Ke7 45. Qg3 Qe4 46. a5 Ke6
                                    47. a6 Qa4 48. Qd3 e4 49. Qe2 Qd7
               11    26.76     --   44. ... Ke7
               11    41.48  -1.38   44. ... Ke7 45. h5 Qf2 46. h6 Qf6 47.
                                    Qb4+ Kd7 48. Qb7+ Ke8 49. Kg1 Qxh6
                                    50. Qc8+ Ke7 51. Qc7+ Kf8 52. Qxe5
                                    Qd2
               11->   1:13  -1.38   44. ... Ke7 45. h5 Qf2 46. h6 Qf6 47.
                                    Qb4+ Kd7 48. Qb7+ Ke8 49. Kg1 Qxh6
                                    50. Qc8+ Ke7 51. Qc7+ Kf8 52. Qxe5
                                    Qd2


question 2:


It takes 42 seconds on my quad xeon to decide that h5 is best.  I didn't have
time to let it produce the PV, as someone kicked off a game on ICC.

               9->   6.21   0.87   45. Qg3
               10     7.93   0.77   45. Qg3 Qe2 46. Kh3 Kd6 47. Qf3 Qxf3+
                                    48. gxf3 d4 49. cxd4 exd4 50. Kg3 d3
                                    51. Kf2 d2
               10->  17.57   0.77   45. Qg3 Qe2 46. Kh3 Kd6 47. Qf3 Qxf3+
                                    48. gxf3 d4 49. cxd4 exd4 50. Kg3 d3
                                    51. Kf2 d2
               11    19.20   0.87   45. Qg3 Qe2 46. Kh3 Kd6 47. Qf3 Qxf3+
                                    48. gxf3 d4 49. cxd4 exd4 50. Kg3 d3
                                    51. Kf2 d2 52. Ke2
               11    42.16     ++   45. h5!!


Bob

>
>[Event "Pamplona, 1998"]
>[Site "Pamplona"]
>[Date "1999.01.05"]
>[Round "9"]
>[White "Morozevich, A."]
>[Black "Van Welly, L."]
>[Result "1-0"]
>[ECO "B90"]
>[WhiteElo "2625"]
>[BlackElo "2635"]
>[PlyCount "101"]
>[EventDate "1998.12.27"]
>
>1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e5 7. Nb3 Be6 8. Be3
>Nbd7 9. Qd2 h5 10. a4 Be7 11. Be2 Nb6 12. O-O Nc4 13. Bxc4 Bxc4 14. Rfd1 O-O
>15. Bg5 Bxb3 16. Bxf6 Bxf6 17. cxb3 Qb6+ 18. Kh1 Qxb3 19. Nd5 Rfc8 20. Nxf6+
>gxf6 21. Qh6 Qe6 22. Rd2 Rc6 23. Rg1 f5 24. Qxh5 fxe4 25. fxe4 Qg6 26. Qh4 Kg7
>27. Rd3 Rh8 28. Qe7 { } 28... Rh6 29. Rf1 Qe6 30. Qxb7 Rf6 31. Rg3+ Kf8 32. Rg1
>Qc8 33. Qb3 Rc1 34. Rc3 Rxc3 35. bxc3 Qc6 36. Qb4 Rf4 37. Re1 Kg7 38. h3 a5 39.
>Qxa5 Rxe4 40. Rxe4 Qxe4 41. Qb4 Qe1+ 42. Kh2 d5 43. Qg4+ Kf6 44. h4 Ke7 45. h5
>Qxc3 46. h6 e4 47. Qg7 Qe3 48. Qe5+ Kd7 49. Qxd5+ Ke7 50. Qe5+ Kd7 51. Qf6 1-0
>
>                            Albert Silver



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