Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Testposition endgame

Author: John Merlino

Date: 07:47:02 01/11/03

Go up one level in this thread


On January 11, 2003 at 10:19:53, Eduard Nemeth wrote:

>The game end draw, but white hase a win position.
>
>
>[Event "London m"]
>[Site "?"]
>[Date "1831.??.??"]
>[Round "?"]
>[White "McDonnell,Alexander"]
>[Black "Fraser,George Brunton"]
>[ECO "C00"]
>[Result "1/2-1/2"]
>
>1. e4 e6 2. f4 d5 3. e5 c5 4. Nf3 Nc6 5. c3 Be7 6. Bd3 Nh6
>7. Bc2 Bd7 8. O-O f5 9. a3 c4 10. h3 Nf7 11. Qe1 g6 12. Kh1
>h6 13. d4 Qb6 14. Nbd2 Na5 15. Rb1 Nb3 16. Bxb3 cxb3 17. c4
>dxc4 18. Nxc4 Qc7 19. Ne3 Bb5 20. Rg1 Bd3 21. Ra1 Be4
>22. Bd2 g5 23. Rc1 Qd7 24. d5 Bxd5 25. Nxd5 Qxd5 26. Bb4
>Bxb4 27. Qxb4 a5 28. Qb6 O-O 29. Rgd1 Ra6 30. Qc7 Rc6
>31. Rxd5 Rxc7 32. Rxc7 exd5 33. e6 Nd6 34. Rd7 Ne4 35. Rxd5
>gxf4 36. Kh2 Ng3 37. Nd4 a4 38. Nb5 Re8 39. Nc7 Re7
>40. Rd8+ Kg7 41. Rd7 Kf8 42. Rd8+ Kg7 43. Rd7 Kf8 44. Rxe7
>Kxe7 45. Nd5+ Kxe6 46. Nxf4+ Ke5 47. Kxg3 Ke4 48. Ne2 Kd3
>49. Nc3 Kc2 50. Nxa4 b5 51. Nc3 Kxb2 52. Nxb5 Ka2 53. Nc3+
>Kxa3 54. Nd1 Ka2 55. Kf3 Kb1 56. Ke2 Kc2 57. g3 h5 58. h4
>Kc1 59. Nc3 Kc2 60. Na4 Kc1 61. Kd3 Kd1 62. Nb2+ Ke1
>63. Ke3 Kf1 64. Nd3 Kg2 65. Kf4 Kh2 66. Kf3 Kh3 67. Kf4 Kg2
>68. Kxf5 Kxg3 69. Kg5 Kf3 70. Kxh5 Ke3 71. Nb2 Kd4 72. Kg5
>Kc3 73. Nd1+ Kd2 74. Nb2 Kc3 1/2-1/2
>
>Position after move 57:
>
>[D]8/8/8/5p1p/8/1p4PP/2k1K3/3N4 w - -
>
>White to move, is win now with 58. h4!
>
>How many time need Your program
>to find h4?
>
>Here an analysis by Fritz 8:
>
>
>1.Se3+ Kc3 2.h4 Kd4 3.Sxf5+ Ke4 4.Sd6+ Kd5 5.Sb5 Kc4 6.Sa3+
>  +-  (1.56)   Tiefe: 21/42   00:04:05  72267kN, tb=92305
>1.h4!
>  +-  (1.59)   Tiefe: 21/42   00:04:21  76850kN, tb=102251
>
>Fritz 8 is slow, or?
>
>Eduard

Chessmaster 9000, on a P3-733, needs two seconds to see h4:

Time	Depth	Score	Positions	Moves
0:00	3/7	0.61	17627		1.Ne3+ Kc1 2.Nc4 Kc2 3.Na3+ Kc1
					4.Ke3 Kb2 5.Nb5 Kc2
0:00	4/8	0.69	36462		1.Ne3+ Kc1 2.Nc4 Kc2 3.Ke3 Kc3
					4.Na3 b2 5.Kf4 Kb3 6.Nb1
0:00	5/9	1.27	68810		1.Ne3+ Kc1 2.Nc4 Kc2 3.h4 Kc3 4.Ne3
					Kb4 5.Kd3 b2 6.Kc2
0:01	6/10	1.28	122268		1.Ne3+ Kc1 2.Nc4 Kc2 3.h4 Kc3 4.Ne3
					Kb2 5.Kd3 Ka3 6.Nc4+ Ka2
0:02	7/11	1.30	224384		1.Ne3+ Kc1 2.Nc4 Kc2 3.h4 Kc3 4.Nd2
					b2 5.Kd1 Kd3 6.Nb1 Kd4 7.Kc2
0:02	7/11	1.49	245174		1.h4 Kc1 2.Nc3 Kc2 3.Na4 Kc1 4.Nc5
					b2 5.Nd3+ Kc2 6.Nxb2 Kxb2 7.Kf3
					Kc3 8.Kf4 Kd4 9.Kxf5
0:02	8/12	1.49	300107		1.h4 Kc1 2.Nc3 Kc2 3.Na4 Kc1 4.Nc5
					b2 5.Nd3+ Kc2 6.Nxb2 Kxb2 7.Kf3
					Kc3 8.Kf4 Kd4 9.Kxf5
0:04	9/13	1.80	557296		1.h4 Kc1 2.Nc3 Kc2 3.Na4 Kc1 4.Nc5
					b2 5.Nd3+ Kc2 6.Nxb2 Kxb2 7.Kf3
					Kc3 8.Kf4 Kd4 9.Kg5 Ke4 10.Kxh5
0:08	10/14	1.80	958207		1.h4 Kc1 2.Nc3 Kc2 3.Na4 Kc1 4.Nc5
					b2 5.Nd3+ Kc2 6.Nxb2 Kxb2 7.Kf3
					Kc3 8.Kf4 Kd4 9.Kg5 Ke4 10.Kxh5
0:18	11/15	2.97	2147461		1.h4 Kc1 2.Nc3 Kb2 3.Kd2 Ka3 4.Kc1
					Kb4 5.Kb2 Kc4 6.Nb1 Kb4 7.Nd2 f4
					8.gxf4
0:39	12/16	3.25	4391977		1.h4 Kc1 2.Nc3 Kb2 3.Kd2 Ka3 4.Kc1
					Kb4 5.Kb2 Kc4 6.Nb1 Kd3 7.Kxb3
					Ke2 8.Kc4 Kf3
1:20	13/17	3.29	8917307		1.h4 Kc1 2.Nc3 Kb2 3.Kd2 Ka3 4.Kc1
					Kb4 5.Kb2 Kc4 6.Ne2 Kb4 7.Nd4 Kc4
					8.Nxb3 Kd5 9.Kc3

jm



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.