Author: Steven J. Brann
Date: 10:48:11 07/13/03
Go up one level in this thread
On July 13, 2003 at 05:06:35, Kurt Utzinger wrote:
>Is there a program to find the nice, very strong and winning sacrifice
>20.Rd6 !!
>
>Hort,V-Kurajica,B (1976)
>[D]r3kb1r/5qpp/bp2p3/p1p1Pp2/P6Q/1P2BN2/2P2PPP/3RR1K1 w kq - 0 20
>
>
>[Event "Vinkovci"]
>[Site "?"]
>[Date "1976.??.??"]
>[Round "?"]
>[White "Hort, Vlastimil"]
>[Black "Kurajica, Bojan"]
>[Result "1-0"]
>[ECO "B30"]
>[PlyCount "57"]
>[EventDate "1976.??.??"]
>
>1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. O-O a6 5. Bxc6 dxc6 6. d3 Qc7 7. e5 f5 8. a4
>a5 9. Na3 Ne7 10. Nc4 Nd5 11. Re1 Nb6 12. Nxb6 Qxb6 13. b3 Qc7 14. d4 $1 cxd4
>15. Qxd4 b6 16. Qc4 Qd7 17. Be3 Ba6 18. Qh4 c5 19. Rad1 Qf7 20. Rd6 {
>Dieses positionelle Qualitaetsopfer gewinnt die Partie.} 20... Bxd6 21. exd6
>O-O 22. Ne5 Qb7 23. Bg5 Qd5 24. Be7 Bb7 25. f3 Qd2 26. d7 Rfb8 27. c4 Qc3 28.
>Kf1 Qd2 29. Qg5 $1 (29. Qg5 Qxg5 (29... Qc3 30. Bf6 g6 31. Qh6) 30. Bxg5 Kf8
>31. Rd1 Rd8 32. Rd6) 1-0
>
>Qh6) 30. Bxg5 Kf8
>31. Rd1 Rd8 32. Rd6) 1-0
Chessmaster 9000 (default SS=14) suggests that 20. Rd2 is stronger (0.90) than
20. Rd6 (0.37). Forcing the text line a move at a time shows a slight advantage
for white but does not encounter anything really decisive until black's 27...Qc3
which was not the best move. This was 8th in Chessmaster's move order and left
white with a 3.45 advantage.
I doubt that there will be too many engines (if any) that would choose the
initial move 20. Rd6.
Sacrifices and brilliancies always appear better when the opponent exhibits
sub-optimal play.
Steve
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