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Subject: Endgame easy test position

Author: Eduard Nemeth

Date: 06:40:26 09/18/01

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.

:-(

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

Re: Endgame easy test position Dieter Buerssner 18:25:48 09/18/01
Re: Endgame easy test position Thomas Mayer 10:52:20 09/18/01
Re: Endgame easy test position John Merlino 08:22:48 09/18/01
Re: Endgame easy test position Andrew Williams 07:41:12 09/18/01
Re: Endgame easy test position Robert Hyatt 07:31:10 09/18/01
- Re: Endgame easy test position Uri Blass 08:44:21 09/18/01
  - Re: Endgame easy test position Miguel A. Ballicora 12:58:55 09/18/01
  - Re: Endgame easy test position José Carlos 09:37:47 09/18/01
Re: Endgame easy test position Ed Schröder 06:56:32 09/18/01
- Re: Endgame easy test position José Carlos 07:45:15 09/18/01
  - Re: Endgame easy test position Uri Blass 07:53:39 09/18/01
    - Re: Endgame easy test position José Carlos 09:25:18 09/18/01
      - Re: Endgame easy test position Uri Blass 14:25:12 09/18/01
    - Re: Endgame easy test position Robert Hyatt 09:22:20 09/18/01
      - Re: Endgame easy test position Uri Blass 10:24:45 09/18/01
        
        Re: Endgame easy test position Robert Hyatt 13:33:08 09/18/01
        
        Re: Endgame easy test position Dave Gomboc 20:08:04 09/18/01
        
        Re: Endgame easy test position Uri Blass 21:46:45 09/18/01
        
        Re: Endgame easy test position Dieter Buerssner 03:54:26 09/19/01
        
        Re: Endgame easy test position Uri Blass 14:17:35 09/18/01
        
        Re: Endgame easy test position Robert Hyatt 15:08:32 09/18/01
        
        Re: Endgame easy test position Robert Hyatt 15:10:19 09/18/01
        
        Re: Endgame easy test position Uri Blass 15:26:00 09/18/01
        
        Re: Endgame easy test position Robert Hyatt 18:58:32 09/18/01
        
        Re: Endgame easy test position Bernhard Bauer 02:20:31 09/19/01
        
        Re: Endgame easy test position Robert Hyatt 06:52:52 09/19/01
        
        Re: Endgame easy test position Uri Blass 07:16:36 09/19/01
        
        Re: Endgame easy test position Robert Hyatt 08:04:38 09/19/01
        
        Re: Endgame easy test position Uri Blass 08:30:16 09/19/01
        
        Re: Endgame easy test position Robert Hyatt 12:19:44 09/19/01
        
        Re: Endgame easy test position Uri Blass 12:57:08 09/19/01
        
        Re: Endgame easy test position Robert Hyatt 18:59:37 09/19/01
        
        Re: Endgame easy test position Peter McKenzie 18:37:53 09/18/01
      - Re: Endgame easy test position Ed Schröder 10:02:02 09/18/01
        
        Re: Endgame easy test position Dieter Buerssner 18:39:23 09/18/01
        
        Re: Endgame easy test position Dann Corbit 10:46:58 09/18/01
        
        Re: Endgame easy test position Robert Hyatt 13:34:39 09/18/01
        
        Re: Endgame easy test position Ed Schröder 11:38:01 09/18/01
        
        Re: Endgame easy test position Robert Hyatt 13:36:10 09/18/01

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