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Subject: Re: pawn endgame position

Author: Dann Corbit

Date: 12:34:57 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

Amy also needs one minute like Crafty:

White(1): st 999
White(1): test jakob.epd
Problem 1:
        +---+---+---+---+---+---+---+---+
      8 |   |   |   |   |   |   |*K*|   |
        +---+---+---+---+---+---+---+---+
      7 |   |   |*P*|*Q*|   |   |   |   |   Hashkey: 686c8116
        +---+---+---+---+---+---+---+---+
      6 |   |   |   |   |   | Q |   |   |
        +---+---+---+---+---+---+---+---+
      5 |*P*|   |   | P | P | P |   |   |   Black (12000,  9000)  P...Q
        +---+---+---+---+---+---+---+---+
      4 |   |*P*|   | P |   |   |   |   |   White (15000,  9000)  P...Q
        +---+---+---+---+---+---+---+---+
      3 |   |   |   |   |   |   |   |   |
        +---+---+---+---+---+---+---+---+
      2 | P |   |   |   |   |   |   | P |   Index: 49
        +---+---+---+---+---+---+---+---+
      1 |   |   |   |   |   |   |   | K |   MateThreat: 0 0
        +---+---+---+---+---+---+---+---+
          a   b   c   d   e   f   g   h
TC: 4 moves in 144000 secs
TL: 31500/126000
GamePhase: Middlegame
It    Time   Score  principal Variation
 9     1.2  +4.784  1. Qe6+ Qf7 2. Qg6+ Kf8 3. Qh6+ Ke8 4. Qc6+ Qd7 5. Qa8+
                    Qd8 6. Qxa5 Qb8 7. f6 Kf7
 9     1.6  +4.784  1. Qe6+ Qf7 2. Qg6+ Kf8 3. Qh6+ Ke8 4. Qc6+ Qd7 5. Qa8+
                    Qd8 6. Qxa5 Qb8 7. f6 Kf7
10     2.1     ---  1. Qe6+
10     5.7  +4.544  1. Qe6+ Qf7 2. f6 Kf8 3. Qc8+ Qe8 4. Qxc7 Qa4 5. Qd8+ Kf7
                    6. e6+ Kg6 7. e7 Qd1+ 8. Kg2 Qg4+ 9. Kf2 Qf5+ 10. Kg3
                    Qg5+ 11. Kf3
10     7.2  +4.544  1. Qe6+ Qf7 2. f6 Kf8 3. Qc8+ Qe8 4. Qxc7 Qa4 5. Qd8+ Kf7
                    6. e6+ Kg6 7. e7 Qd1+ 8. Kg2 Qg4+ 9. Kf2 Qf5+ 10. Kg3
                    Qg5+ 11. Kf3
11     9.8  +4.672  1. Qe6+ Qf7 2. d6 cxd6 3. exd6 Kf8 4. d7 Qe7 5. d5 a4 6.
                    f6 Qd8 7. d6
11    14.6  +4.672  1. Qe6+ Qf7 2. d6 cxd6 3. exd6 Kf8 4. d7 Qe7 5. d5 a4 6.
                    f6 Qd8 7. d6
12    32.0     ---  1. Qe6+
12    59.7  -1.632  1. Qe6+ Qxe6 2. fxe6 a4 3. d6 cxd6 4. exd6 Kf8 5. d7 Ke7
                    6. d5 b3 7. axb3 axb3 8. d6+ Kd8 9. h4
12    1:01     +++  1. e6




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