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Subject: Re: pawn endgame position

Author: Dann Corbit

Date: 12:57:52 01/22/01

Go up one level in this thread


On January 22, 2001 at 09:36:53, Steffen Jakob wrote:

>Hossa played a blitz game with Amateur some minutes ago where he got a won
>endgame position. Both sides had a queen and pawns. Hossa was 3 pawns up. Then
>there was the opportunity to exchange the queens resulting in a pawn endgame
>position where Hossa had 3 connected advanced passed pawns and Amateur had no
>passer at all. You can imagine that Hossa was very happy to exchange in this
>line. Unfortunately the 3 passers werent able to force a promotion without the
>help of their king who was far away. On the other hand black could create a
>passer which could not be stopped by white. So in the end Hossa lost this
>"deadly" won position :-)
>
>I am interested if "your" engine could resist to play 46.Qe6+ in a blitz game.
>
>[D]6k1/2pq4/5Q2/p2PPP2/1p1P4/8/P6P/7K w
>
>Best wishes,
>Steffen.
>
>[Event "ICS rated blitz match"]
>[Site "204.178.125.65"]
>[Date "2001.01.22"]
>[Round "-"]
>[White "Hossa"]
>[Black "Amateur"]
>[Result "0-1"]
>[WhiteElo "2508"]
>[BlackElo "2548"]
>[TimeControl "300+2"]
>
>1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. Nf3 h6 7. Bh4 O-O
>8. e3 Nc6 9. Be2 Be6 10. O-O Ne4 11. Bxe7 Qxe7 12. Qb3 Nxc3 13. bxc3 Rab8
>14. Bd3 Rfd8 15. Qc2 Bg4 16. Nd2 Qg5 17. f4 Qf6 18. Nf3 Ne7 19. Ne5 Bh5 20.
>Bh7+ Kh8 21. g4 Bg6 22. Bxg6 Nxg6 23. c4 Nxe5 24. fxe5 Qe6 25. cxd5 Qxg4+
>26. Kh1 Rf8 27. Rf4 Qc8 28. Rg1 Qd7 29. e4 Qe7 30. Qc1 b5 31. Rf3 b4 32.
>Rfg3 Rg8 33. R1g2 a5 34. Qf4 Rbd8 35. Rh3 f5 36. Rxh6+ gxh6 37. Qxh6+ Qh7
>38. Qf6+ Rg7 39. Qxd8+ Qg8 40. Qf6 Qf7 41. Rxg7 Qxg7 42. Qh4+ Kg8 43. exf5
>Qd7 44. Qg5+ Kf8 45. Qf6+ Kg8 46. Qe6+ Qxe6 47. fxe6 Kf8 48. d6 cxd6 49.
>exd6 a4 50. d7 Ke7 51. Kg2 b3 52. axb3 axb3 53. d5 b2 54. Kf3 b1=Q 55. Kf4
>Qd3 56. Ke5 Qe3+ 57. Kf5 Qd4
>{Hossa resigns} 0-1

Phalanx has a time of it:

[ white, 1 ]
6k1/2pq4/5Q2/p2PPP2/1p1P4/8/P6P/7K w

6k1/2pq4/5Q2/p2PPP2/1p1P4/8/P6P/7K w
    -> increment adds 1440 s to soft time limit
    -> soft time limit 3154.28 s
    -> hard time limit 41599.9 s
  6    654   112   213089  Qf6-e6  Qd7-f7  Pf5-f6  Pa5-a4  Qe6-c8  Kg8-h7
                           Pe5-e6  Qf7xf6  Qc8xc7  Kh7-g6
  6 ->   0:01.60   305919   0 turns
  7    654   583  1226489  Qf6-e6  ??
  7    352   742  1585651  Qf6-e6  Qd7xe6  Pf5xe6  Pa5-a4  Pd5-d6  Pc7xd6
                           Pe5xd6  Kg8-f8  Pd6-d7  Kf8-e7  Pd7-d8B  Ke7xd8
                           Ph2-h4  Kd8-e7
  7    357   762  1623830  Qf6-g6  !
  7    525   919  1926808  Qf6-g6  Kg8-f8  Qg6-h6  Kf8-g8  Qh6-g5  Kg8-f8
                           Kh1-g1  Qd7xd5
  7 ->   0:10.26  2108193   1 turn
  8    525  1161  2360687  Qf6-g6  Kg8-f8  Qg6-h6  Kf8-g8  Qh6-g5
  8 ->   0:23.94  4694659   0 turns
  9    525  2935  5710337  Qf6-g6  Kg8-f8  Qg6-h6  Kf8-g8  Qh6-g5
  9    526  3916  7666834  Qf6-g5  Kg8-f8  Pd5-d6  Pc7xd6
  9 ->   1:10.73 13328419   1 turn
 10    526  8747 16329005  Qf6-g5  Kg8-f8  Pd5-d6  Pc7xd6  Pe5-e6  Qd7-b7
                           Kh1-g1  Qb7-g7  Qg5xg7  Kf8xg7  Pe6-e7  Kg7-f7
 10 ->   3:58.68 42938008   0 turns
 11    526 40425 71196909  Qf6-g5  Kg8-f8  Pd5-d6  Pc7xd6  Qg5-h6  Kf8-g8
                           Pe5-e6  Qd7-b7  Kh1-g1  Qb7-g7
 11 ->  17:32.80 184157117   0 turns




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