Author: Will Hunter
Date: 05:22:56 05/21/04
Go up one level in this thread
On May 21, 2004 at 07:50:11, Kurt Utzinger wrote:
>[D]r1b1k2r/pp1n1p1p/5p2/qB2p3/3NP2P/7R/P4PP1/R2Q1K2 w kq - 0 15
>Shredder 8 vs Ruffian 2.1.0
>Position after 14...e5 15.Nf5!! +-
>Which programs find this fine winning move?
>
>[Event "RK 2004 Ath 1.3/64 90m+30s"]
>[Site "Zurich"]
>[Date "2004.05.18"]
>[Round "16.5"]
>[White "Shredder 8"]
>[Black "Ruffian 2.1.0"]
>[Result "1-0"]
>[ECO "D39"]
>[Annotator "Utzinger,K"]
>[PlyCount "51"]
>
>1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 dxc4 5. e4 Bb4 6. Bg5 c5 7. Bxc4 cxd4 8.
>Nxd4 Bxc3+ 9. bxc3 Qa5 10. Bb5+ Nbd7 11. Bxf6 Qxc3+ 12. Kf1 {The opening line
>chosen by the programs is a very critical one for Black with a bad score - The
>gewahelte Eroeffnungsvariante is insbesondere fuer Schwarz sehr kritisch mit
>einem schlechten Score} gxf6 {Black last book move} 13. h4 Qa5 14. Rh3 {
>White last book move} e5 {Not only for computers a logical move as it seems
>as if White is forced to play 15.Bxd7 but in reality it's completely wrong to
>give square free for white's knight. Necessary was 14...a6 - Nicht nur fuer
>Computer eine logische Fortsetzung, denn scheinbar ist 15.Lxd7 erzwungen.
>Trotzdem war es voellig falsch, das Feld f5 fuer den weissen Springer
>freizumachen. Notwendig war 14...a6} 15. Nf5 {
>A very fine piece sacrifice - Ein sehr huebsches Figurenopfer} Qxb5+ 16. Rd3 {
>With the threat Nd6 winning black's queen - Mit der Drohung, durch Sd6 die
>schwarze Dame zugewinnen} Qa6 17. Kg1 {I think it's no exaggaration to say
>that White has already reached a won position - Ich glaube, dass man ohne zu
>uebertreiben sagen kann, dass Weiss eine gewonnene Stellung erreicht hat} Rg8
>18. Rc1 {Despite long analysis I could not find a way for Black to save the
>game - Trotz langer Analysen konnte ich fuer Schwarz keine Verteidigung mehr
>finden, um die Partie zu retten} Qxa2 19. Rc7 Qe6 20. Qc2 {
>Wins material - Gewinnt Material} Kd8 21. Nd6 Qxd6 {
>21...Qg4 does not work on account of 22.Rg3 - 21...Dg4 scheitert an 22.Tg3} 22.
>Rxd6 Re8 23. Rd3 Re6 24. Rg3 Re8 25. Qc4 Rb8 26. Rc3 {A good example to
>demonstrate that one wrong move often is decisive - Ein gutes Beispiel, dass
>ein einziger falscher Zug genuegt, die Entscheidung zu bringen} 1-0
Yes, this is odd Shredder 8 would allow, worse, force 15. Nf5!! as it's
devastating!
This is a relatively fast game, but by no means blitz, and computer processing
speed isn't a factor either. It's puzzling.
Curious, would you reverse engines in this position to see the result?
Maybe this could be attributed to a bug in Shredder 8?
I think SMK should see this.
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