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Subject: Re: Avoid move position

Author: Richard Pijl

Date: 07:04:26 01/09/03

On January 09, 2003 at 09:35:16, Andrew Williams wrote:

>Hi,
>
>Last night I was looking at a game between Hossa and PostModernist. PM lost
>after it took the pawn on a2 in this position:
>
>[D]r3r1k1/pbpp1pp1/1p3n1p/8/q1PPp3/2P1P1P1/P2BQP1P/1R2RBK1 b - - 0 19 am Qxa2
>
>
>How long does it take your program to ignore the Pawn here? Even after five
>minutes thinking, PM still wants to take it. The full game follows:
>
>[Event "ICC 20 5"]
>[Site "Internet Chess Club"]
>[Date "2003.01.03"]
>[Round "-"]
>[White "Hossa"]
>[Black "PostModernist"]
>[Result "1-0"]
>[ICCResult "Black resigns"]
>[WhiteElo "2303"]
>[BlackElo "2356"]
>[Opening "English: four knights, kingside fianchetto"]
>[ECO "A29"]
>[NIC "EO.04"]
>[Time "05:12:05"]
>[TimeControl "1200+5"]
>
>1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Nd4 5. Bg2 Nxf3+ 6. Bxf3 Bb4 7. d4 e4
>8. Bg2 O-O 9. Bg5 Re8 10. O-O Bxc3 11. bxc3 h6 12. Bf4 b6 13. Re1 Bb7 14.
>Rb1 Nh5 15. Bd2 Qf6 16. Bh3 Qc6 17. e3 Nf6 18. Qe2 Qa4 19. Bf1 Qxa2 20. Ra1
>Qb3 21. Reb1 Qc2 22. Rc1 Qb3 23. Be1 Nd5 24. Rc2 d6 25. Rb2 Qxb2 26. Qxb2
>Nf6 27. c5 dxc5 28. dxc5 Red8 29. c4 Nd7 30. cxb6 cxb6 31. Bb4 Bc6 32. Bh3
>f6 33. Bd6 Re8 34. Ra6 Ne5 35. c5 Bd5 36. Bxe5 Rxe5 37. cxb6 axb6 38. Rxa8+
>Bxa8 39. Qxb6 Bd5 40. Qb8+ Kh7 41. Bd7 h5 42. Qc8 Kg6 43. Qf8 Bc4 44. Be8+
>Kh7 45. Bf7 Bxf7 46. Qxf7 Kh6 47. Kg2 Rb5 48. h3 Rg5 49. Qg8 Re5 50. g4 hxg4
>51. hxg4 Kg6 52. Kg3 Kh6 53. Kf4 Kg6 54. Qc4 Kh6 55. Qf7 Kh7 56. Qc7 Rg5 57.
>Kxe4 Kg6 58. Qd7 Re5+ 59. Kd4 Ra5 60. f4 Ra1 61. Qe8+ Kh7 62. g5 fxg5 63.
>fxg5 Rd1+ 64. Kc5 {Black resigns} 1-0
>
>
>Andrew

On a PII-500 Baron 0.99.4 beta 4 discards Qxa2 after 2 seconds:

 ply       time     nodes  score  pv

  4( 4)&      0      3815     75  a4a2 b1a1 a2c2 f1g2
  4( 6).      0      6542     75  a4a2 b1a1 a2c2 f1g2
  5( 6)&      0     11944     85  a4a2 f1h3 a7a5 h3f5 a8a6
  5( 6).      0     15654     85  a4a2 f1h3 a7a5 h3f5 a8a6
  6( 8)-      0     34821     50  a4a2 b1a1 a2c2 f1g2 d7d5 e1d1
  6( 8)&      0     39193     50  a4a2 e2d1
  6( 8).      0     39234     50  a4a2 e2d1
  7( 9)+      0     46823     85  a4a2 b1a1 a2c2 a1c1 c2b3 c1a1 d7d5
  7( 9)&      0     63726     91  a4a2 b1a1 a2c2 e1c1 c2b2 f1g2 a7a5
  7(10).      1    103676     91  a4a2 b1a1 a2c2 e1c1 c2b2 f1g2 a7a5
  8(12)&      2    220687     57  d7d5 c4d5 b7d5 c3c4 a4a2 c4d5 a7a5
  8(12)&      4    399670     77  a7a5 b1a1 b7a6 e2d1 a4d1 e1d1 d7d5 c4d5 f6d5
c3c4
  8(12).      5    475311     77  a7a5 b1a1 b7a6 e2d1 a4d1 e1d1 d7d5 c4d5 f6d5
c3c4
  9(13)&      8    779985     78  a7a5 b1a1 b7a6 e2d1 a4d1 e1d1 d7d5 c4d5 a6f1
g1f1 f6d5
  9(14).     15   1404152     78  a7a5 b1a1 b7a6 e2d1 a4d1 e1d1 d7d5 c4d5 a6f1
g1f1 f6d5
 10(19)&     48   4152008     56  a4a5 e1c1 b7a6 e2d1 d7d5 d1b3 a8d8 d2e1 f6g4
c4d5
 10(19).     66   5713921     56  a4a5 e1c1 b7a6 e2d1 d7d5 d1b3 a8d8 d2e1 f6g4
c4d5
 11(21)&    156  13131496     40  a4a5 e2d1 f6h7 a2a4 b7c6 b1b4 a5f5 f1g2 d7d5
d1c2 d5c4
 11(21).    226  19485176     40  a4a5 e2d1 f6h7 a2a4 b7c6 b1b4 a5f5 f1g2 d7d5
d1c2 d5c4
 12(23)&    370  30991095     38  a4a5 e2d1 f6h7 a2a4 b7a6 d1b3 d7d5 c4d5 a6f1
e1f1 e8d8 b3c4 d8d5
 12(23)&    523  44028658     50  a7a5 e1c1 b7a6 e2d1 a4c6 d1b3 a5a4 b3b4 d7d5
c4d5 f6d5

Re: Avoid move position Andrew Williams 07:09:26 01/09/03
- Re: Avoid move position Richard Pijl 07:27:11 01/09/03
  - Re: Avoid move position Uri Blass 07:32:45 01/09/03
    - Re: Avoid move position Frank Phillips 09:44:57 01/09/03
      - Re: Avoid move position Uri Blass 09:49:00 01/09/03
        
        Re: Avoid move position - testing repetitions Frank Phillips 10:30:37 01/09/03
        
        Re: Avoid move position - testing repetitions Miguel A. Ballicora 09:06:55 01/10/03
        
        Re: Avoid move position - testing repetitions Frank Phillips 09:59:40 01/10/03
        
        Re: Avoid move position - testing repetitions Dieter Buerssner 18:36:57 01/09/03
        
        Re: Avoid move position - testing repetitions Frank Phillips 02:17:53 01/10/03
        
        Re: Avoid move position - testing repetitions Uri Blass 02:28:42 01/10/03
        
        Re: Avoid move position - testing repetitions Frank Phillips 08:19:40 01/10/03
        
        Re: Avoid move position - testing repetitions Dieter Buerssner 08:58:21 01/10/03
        
        Re: Avoid move position - testing repetitions Frank Phillips 09:54:02 01/10/03
        
        Re: Avoid move position - testing repetitions Dieter Buerssner 10:19:30 01/10/03
        
        Re: Avoid move position - testing repetitions Frank Phillips 13:33:13 01/10/03
        
        Re: Avoid move position - testing repetitions Frank Phillips 10:13:27 01/10/03
        
        Re: Avoid move position - testing repetitions Uri Blass 09:59:40 01/10/03
        
        Re: Avoid move position - testing repetitions Richard Pijl 06:29:19 01/10/03
        
        Re: Avoid move position - testing repetitions José Antônio Fabiano Mendes 11:29:40 01/09/03
        
        Re: Avoid move position - testing repetitions Frank Phillips 12:07:23 01/09/03
    - Re: Avoid move position Andrew Williams 08:25:22 01/09/03

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