Author: Robert Hyatt
Date: 09:18:38 10/25/02
Go up one level in this thread
On October 25, 2002 at 09:55:48, Rolf Tueschen wrote:
>On October 24, 2002 at 17:17:19, Robert Hyatt wrote:
>
>>Here is a game where Kramnik played black, and he made the same sort of
>>sacrifice he made against Deep Fritz,
>
>Wrong!
>
>
>>but he made it against Anand, and he
>>got rapped for it. Crafty says this just drops a piece. I ran the position
>>after
>>Bxf2 to a pretty deep depth and the score didn't change as I even followed the
>>game for a move or two deeper. If you let Crafty search for a black move
>>there, it likes either the rook move as suggested in the annotation, or Nd8
>>if you let it search longer than one second... Score after Bxf2 is +3.5, score
>>after Nd8 is +.5.
>
>I think we could prove very quickly why it's way too early that we could rely on
>the research with our actual PC programs. Also you miss the complete problem of
>that game. It's not at all the same or similar to the Nxf7 against Deep Fritz.
It is similar for one main reason: It simply drops a piece for nothing.
So in that regard, it was a sacrifice that was unsound, which could be called
a blunder by most any definition since it causes an equal position to turn into
a dead lost position.
>
>First the surprise. 15.h3 is already the refutation of the line! Tjat was the
>novelty. Kranik followed an older idea and lost his B on h5. That was the clue
>of h3. Kramnik still tried Bxf2 but Anand had analysed the line till the 27th
>move at home with his second. - That's all. Nothing to discover here, the whole
>line is not ok for Black.
>
>Why Kramnik played such not 100% analysed positions? Where did he do that? In
>Tilburg, aha, fine. Did he make such weak moves against Kasparov? Apparently
>not. Conclusion? Different situations with different importances.
>
>Rolf Tueschen
>
>
>
>>
>>That seems to qualify as either a blunder or unsound sac... your choice. Here
>>is the relevant PGN:
>>
>>[Event "1998.10.23"]
>>[Site "Tilburg"]
>>[Date "1998.11.10"]
>>[Round "2"]
>>[White "Anand, Viswanathan"]
>>[WhiteElo "2795"]
>>[Black "Kramnik"]
>>[BlackElo "2780"]
>>[Result "1-0"]
>>[Annotator "Crafty v19.1"]
>>{annotating for player Kramnik}
>>{using a scoring margin of +1.00 pawns.}
>>{search time limit is 1.00}
>>
>> 1. e4 e5
>> 2. Nf3 Nf6
>> 3. Nxe5 d6
>> 4. Nf3 Nxe4
>> 5. d4 d5
>> 6. Bd3 Nc6
>> 7. O-O Be7
>> 8. Re1 Bg4
>> 9. c3 f5
>> 10. Qb3 O-O
>> 11. Nbd2 Na5
>> 12. Qa4 Nc6
>> 13. Bb5 Nxd2
>> 14. Nxd2 Qd6
>> 15. h3 Bh5
>> 16. Nb3 Bh4
>> 17. Nc5 Bxf2+
>> ({7:+3.33} 17. ... Bxf2+ 18. Kxf2 Nd8 19. Kg1 c6 20. Bd3 b6 21.
>>Nb3 $18)
>> ({7:+0.15} 17. ... Rfe8 18. Bd2 a6 19. Rxe8+ Rxe8 20. Bxc6 bxc6
>>21. Qxa6 Re2 $10)
>> 18. Kxf2 Qh2
>> ({8:+4.91} 18. ... Qh2 19. Bxc6 bxc6 20. Qxc6 Qd6 21. Qxd6 cxd6
>>22. Ne6 Rfe8 $18)
>> ({8:+3.61} 18. ... Nd8 19. Qc2 Bg6 20. Nd7 a6 21. Nxf8 axb5 22.
>>Nxg6 Qxg6 $18)
>> 19. Bxc6 bxc6
>> 20. Qxc6 f4
>> 21. Qxd5+ Kh8
>> 22. Qxh5 f3
>> 23. Qxf3 Rxf3+
>> 24. Kxf3 Rf8+
>> 25. Ke2 Qxg2+
>> 26. Kd3 Qxh3+
>> 27. Kc2 Qg2+
>> 28. Bd2 Qg6+
>> 29. Re4 h5
>> 30. Re1 Re8
>> 31. Kc1 Rxe4
>> 32. Nxe4 h4
>> 33. Ng5 Qh5
>> 34. Re3 Kg8
>> 35. c4
>> 1-0
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