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Subject: Re: First Sacrifice! (only for a draw, but still.....)

Author: James Robertson

Date: 12:24:38 02/22/99

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On February 22, 1999 at 15:06:49, Robert Hyatt wrote:

>On February 22, 1999 at 14:27:24, James Robertson wrote:
>
>>Wow! Today I started testing a new version of my program on FICS. It played it's
>>first sacrifice! It was only to save a bad position, but still.... I am really
>>happy. 42. ... Bxe3! Here is the game, played on FICS:
>>
>>[Event "ICS rated blitz match"]
>>[Site "freechess.org"]
>>[Date "1999.02.22"]
>>[Round "-"]
>>[White "SapphireII"]
>>[Black "JRCP"]
>>[Result "1/2-1/2"]
>>[WhiteElo "2121"]
>>[BlackElo "1936"]
>>[TimeControl "120+12"]
>>
>>1. c4 f5 2. d4 e6 3. g3 Nf6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d6 7. Nc3 Qe8 8.
>>b3 Nc6 9. d5 exd5 10. cxd5 Ne5 11. Bb2 Bd7 12. Rc1 Rc8 13. Qd4 Nxf3+ 14.
>>Bxf3 a5 15. Qa7 b6 16. Rfd1 Ng4 17. Bxg4 fxg4 18. Ne4 Bf5 19. Rd4 Bd8 20.
>>Qa6 Be7 21. Qc4 Qg6 22. a4 Kh8 23. Ba1 Qf7 24. Kh1 Bd8 25. Rf1 Qg6 26. Nc3
>>Bf6 27. Rdd1 Bc2 28. Rd2 Bf5 29. Rdd1 Bc2 30. Rd2 Bg5 31. e3 Qf5 32. Kg1
>>Qg6 33. Nb5 Bf5 34. Rc1 Rf7 35. Qc6 Kg8 36. Qb7 Bd8 37. Qa6 Qh6 38. Nd4 Bd7
>>39. Qb7 Qg5 40. Bb2 Qh6 41. Nc6 Bg5 42. Rdc2 Bxe3 43. fxe3 Qxe3+ 44. Kh1
>>Qe4+ 45. Kg1 Qe3+ 46. Kh1 Qe4+ 47. Kg1 Qe3+
>>{Game drawn by mutual agreement} 1/2-1/2
>>
>>James
>
>
>I don't believe this is a 'sac'.  IE your opponent shouldn't take it.  If
>he does (he did) you should have blown him out:
>
>                8     3.78     ++   43. ... Qxe3+!!
>                8    14.12   2.52   43. ... Qxe3+ 44. Kh1 Rcf8 45. Qa6
>                                    Bf5 46. Rg2 Bd3 47. Ne7+ Rxe7 48. Qb7
>                                    Rff7
>                8->  15.11   2.52   43. ... Qxe3+ 44. Kh1 Rcf8 45. Qa6
>                                    Bf5 46. Rg2 Bd3 47. Ne7+ Rxe7 48. Qb7
>                                    Rff7
>                9    21.14     ++   43. ... Qxe3+!!
>                9    40.89   3.48   43. ... Qxe3+ 44. Kh1 Rcf8 45. Ne7+
>                                    Rxe7 46. Rg2 Qxb3 47. Qxc7 Qxd5 48.
>                                    Kg1 Ref7
>                9->  42.57   3.48   43. ... Qxe3+ 44. Kh1 Rcf8 45. Ne7+
>                                    Rxe7 46. Rg2 Qxb3 47. Qxc7 Qxd5 48.
>                                    Kg1 Ref7
>
>(the above from my PII/300 notebook)

Hmmm. My program has to wait until ply 9 and a very long think before it
realizes it is ahead.

James

• Re: First Sacrifice! (only for a draw, but still.....) Robert Hyatt 13:27:37 02/22/99
  • Re: First Sacrifice! (only for a draw, but still.....) Dann Corbit 15:06:15 02/22/99
    • Re: First Sacrifice! (only for a draw, but still.....) Bruce Moreland 22:56:35 02/22/99
    • Re: First Sacrifice! (only for a draw, but still.....) James Robertson 18:06:51 02/22/99

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