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Subject: Re: Yet another sacrifice

Author: Gerd Isenberg

Date: 09:22:42 08/09/02

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On August 08, 2002 at 21:31:19, José Carlos wrote:

>  This one should be easy for positional reasons:
>
>[D]r2q1rk1/pb1nbp2/4p2p/2ppP1pQ/N2N4/6B1/PPP2PPP/R4RK1 w - - 0 15 bm Nxe6;
>

IsiChess (Athlon XP2000+) found it fast with "king in corner" repetition
heuristic (+0.69 0.35secs 6/8). After 22secs +84 11/20 with 19.f4 in the PV.
After 45secs FH +1.15.

>  But probably the key move on the variation to know it's more than a draw is:
>
>[D]r2q1r1k/pb1nb3/4p1Q1/2ppP1p1/N7/6B1/PPP2PPP/R4RK1 w - - 0 19 bm f4;
>
>  What do your programs say?
>

found it immediatly (with cleared hash of course), but after 2 seconds change to
Qh6+ (+1.11 8/11),  FL to +0.58 9/16 and back to f4 in 11 seconds with
increasing score from 0.81 to +1.27 in 3:00 12/23.

Gerd

>
>  The game:
>
>[Event "ICS rated standard match"]
>[Site "204.178.125.65"]
>[Date "2002.08.06"]
>[Round "-"]
>[White "AvernoX"]
>[Black "Dorky"]
>[Result "1-0"]
>[WhiteElo "2288"]
>[BlackElo "2327"]
>[TimeControl "3600+10"]
>
>1. Nc3 e6 2. e4 d5 3. Nf3 Nf6 4. e5 Nfd7 5. d4 c5 6. dxc5 Nc6 7. Bf4 h6 8.
>Bb5 Bxc5 9. O-O g5 10. Bg3 O-O 11. Na4 Be7 12. Bxc6 bxc6 13. Nd4 Bb7 14.
>Qh5 c5 15. Nxe6 fxe6 16. Qg6+ Kh8 17. Qxh6+ Kg8 18. Qg6+ Kh8 19. f4 gxf4
>20. Bxf4 Bh4 21. Qh6+ Kg8 22. Qxe6+ Kh8 23. Qh6+ Kg8 24. e6 Ba6 25. Qg6+
>Kh8 26. exd7 Bxf1 27. Qh5+ Kg8 28. Qxd5+ Kh7 29. Rxf1 Qf6 30. Nxc5
>{Dorky resigns} 1-0
>
>  José C.






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