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Subject: Re: Endgame easy test position

Author: José Carlos

Date: 07:45:15 09/18/01

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On September 18, 2001 at 09:56:32, Ed Schröder wrote:

>On September 18, 2001 at 09:40:26, Eduard Nemeth wrote:
>
>>First the game:
>>
>>[Event "TCh-YUG Herceg Novi YUG"]
>>[Site "?"]
>>[Date "2001.??.??"]
>>[Round "?"]
>>[White "Vukic,M"]
>>[Black "Marinkovic,I"]
>>[WhiteElo "2470"]
>>[BlackElo "2440"]
>>[ECO "A30"]
>>[Result "1-0"]
>>
>>1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O g6 5. c4 c5 6. Nc3
>>Bg7 7. d4 cxd4 8. Qxd4 d6 9. Be3 Nbd7 10. Rac1 Rc8 11. b3
>>O-O 12. Qd2 Nc5 13. Rfd1 Nce4 14. Nxe4 Nxe4 15. Qe1 Qd7
>>16. Nd4 Nf6 17. Nf3 Ne4 18. Qb4 Nc3 19. Rd2 Ne4 20. Rd3 Nc5
>>21. Rdd1 Rfd8 22. Ne1 h5 23. Bxc5 Rxc5 24. Nd3 Bxg2
>>25. Kxg2 Qb7+ 26. f3 Rc7 27. Nf2 Rdc8 28. Qd2 b5 29. cxb5
>>Qxb5 30. Kf1 Bc3 31. Qd3 Qa5 32. Rc2 Bf6 33. Rdc1 Rxc2
>>34. Rxc2 Rxc2 35. Qxc2 d5 36. e3 Kg7 37. Nd3 e6 38. Ke2 Qa3
>>39. f4 Kg8 40. h3 Kg7 41. Kf3 Qd6 42. g4 hxg4+ 43. hxg4 e5
>>44. fxe5 Bxe5 45. Nxe5 Qxe5 46. Qc5 Qf6+ 47. Kg3 Qe5+
>>48. Kh3 a6 49. Qd4 Kf6 50. b4 Ke6 51. a4 Qc7 52. g5 Qc2
>>53. Qf6+ Kd7 54. Qxf7+ Kd6 55. Qf6+ Kd7 56. Qd4 Ke6 57. Kg3
>>Qb1 58. Qb6+ Ke7 59. Qb7+ Kf8 60. Qxd5 Qxb4 61. Qd8+ Kg7
>>62. Qd4+ 1-0
>>
>>Position after move 61. Kg7:
>>
>>[D]3Q4/6k1/p5p1/6P1/Pq6/4P1K1/8/8 w - -
>>
>>After 62. Qf6+ is the win not easy. But after 62. Qd4+ is the game easy to win,
>>and the game end! For any programs ist the move Qd4+ not easy to find.
>>
>>:-(
>
>
>I am sure all Rebel programs find this instantly. A simple chess rule says:
>"one pawn up in a pawn ending wins".
>
>Ed

  Are you serious Ed? In this position, it's a clear win, but in most pawn
endgames, you have to calculate a lot, or otherwise know some rules (which names
I don't know how to translate from spanish to english) to figure if it's a win
or not.

  Maybe you were simply joking, and I didn't catch it... :)

  José C.

>
>
>>S532 finds the move with TBs after 58 seconds on P600:
>>
>>Analysis by Shredder 5.32:
>>
>>
>>1.Df6+ Kh7 2.Dxa6 De1+ 3.Kg4 Dg1+ 4.Kf4 Dh2+ 5.Ke4 Dg2+ 6.Kd4 Dxg5 7.Db7+ Kh8
>>  +-  (2.33)   Tiefe: 11/22   00:00:44  7096kN, tb=6535
>>1.Dd7+ Kg8 2.De6+ Kh7 3.Dxa6 De1+ 4.Kg4 Dg1+ 5.Kf4 Dh2+ 6.Ke4 Dg2+ 7.Kd4 Dxg5
>>8.Db7+ Kh8
>>  +-  (2.34)   Tiefe: 11/22   00:00:46  7474kN, tb=6990
>>1.Dd7+ Kg8 2.De6+ Kh7 3.Dxa6 De1+ 4.Kg4 Dg1+ 5.Kf4 Dh2+ 6.Ke4 Dg2+ 7.Kd4 Dxg5
>>8.Db7+ Kh8
>>  +-  (2.34)   Tiefe: 11/22   00:00:52  8440kN, tb=7665
>>1.Dd4+ Dxd4 2.exd4 Kf7 3.Kf4 Ke6 4.Ke4 Kf7
>>  +-  (2.35)   Tiefe: 11/22   00:00:58  9490kN, tb=8444
>>1.Dd4+ Dxd4 2.exd4 Kf7 3.Kf4 Ke6 4.Ke4 a5 5.d5+ Kd7 6.Ke5 Ke7 7.d6+
>>  +-  (2.66)   Tiefe: 11/22   00:00:58  9494kN, tb=8444
>>
>>
>>For Tiger 14 is this not so easy:
>>
>>Analysis by Chess Tiger 14.0:
>>
>>1.Df6+ Kh7 2.Dxa6 De1+ 3.Kg2 Dxe3 4.Db7+ Kg8 5.Dc8+ Kf7 6.Dd7+ Kg8 7.Dd5+ Kg7
>>8.a5 De2+ 9.Kg3 De1+
>>  +-  (2.28)   Tiefe: 15   00:03:00  37784kN, tb=595
>>1.Dd4+ Dxd4 2.exd4 Kf7 3.d5 Ke7 4.Kf4 Kd6 5.Ke4 a5 6.Kd4 Ke7 7.Ke5 Kf7 8.d6 Ke8
>>9.Kf6
>>  +-  (2.36)   Tiefe: 15   00:03:31  44143kN, tb=712
>>1.Dd4+
>>  +-  (3.26)   Tiefe: 16   00:03:52  48366kN, tb=955
>>
>>Eduard



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