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Subject: Re: Junior's great sac! - the game in pgn format

Author: Robert Hyatt

Date: 21:23:36 06/18/99

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On June 18, 1999 at 22:01:26, James Robertson wrote:

>On June 18, 1999 at 17:43:13, Robert Hyatt wrote:
>
>>On June 18, 1999 at 10:13:05, Robert Ericsson wrote:
>>
>>>On June 18, 1999 at 10:02:27, James Robertson wrote:
>>>
>>>>Very exciting game. As far as I know, the first totally successful sacrificial
>>>>kingside attack in this tournament.
>>>>
>>>>James
>>>
>>>Yeah, great game indeed :-)
>>>
>>>[Event "WCCC99"]
>>>[Site "Paderborn"]
>>>[Date "1999.06.18"]
>>>[Round "6"]
>>>[White "Junior"]
>>>[Black "Nimzo"]
>>>[Result "1-0"]
>>>
>>>1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. Bg5
>>>dxc4 7. e4 Be7 8. Bxf6 Bxf6 9. Bxc4 O-O 10. e5 Be7 11. O-O
>>>c5 12. d5 exd5 13. Nxd5 Nc6 14. Qd3 b5 15. Ba2 c4 16. Qe4
>>>Bc5 17. Nf6+ gxf6 18. Bb1 Re8 19. Qxh7+ Kf8 20. Qh6+ Ke7
>>>21. Qxf6+ Kf8 22. Qh6+ Ke7 23. Be4 Qb6 24. e6 Rad8 25. exf7
>>>Rh8 26. Qg7 Rhf8 27. Bf5 Rxf7 28. Rfe1+ 1-0
>>>
>>>Robert
>>
>>
>>Nf6 isn't a sac.  all the programs observing the game found that move.  Crafty
>>saw it in 10 seconds on my PII/300 notebook...  the score was +.7 for the
>>move...
>
>Apparently Nimzo did not see it....
>
>James


More likely it just did a poor job of evaluating the resulting position.
Getting the 3 pawns back doesn't take much of a search.  Deciding whether you
like having a piece for 3 pawns is harder.  And then factoring in king safety
tends to cause problems for programs that try to be unbearably fast...



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