Author: Kurt Utzinger
Date: 06:32:38 05/21/04
Go up one level in this thread
On May 21, 2004 at 08:22:56, Will Hunter wrote:
>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.
CM9 T02 on P4 1.8/32 MB hash needs rather long
to avoid Ruffian's mistake 14...e5?
Kurt
The King 3.23 T02 UCI1:
3 00:00 0.82 e5 Qh5 Rf8 Bc4
3 00:00 0.43 a6 Ba4 f5 exf5
4 00:00 0.23 a6 Bxd7+ Bxd7 Rb1 Rc8 Rxb7 Qxa2
4 00:00 -0.28 e5 Qh5 Qb4 Bxd7+ Bxd7
5 00:00 -0.72 e5 Qh5 Qb4 Bxd7+ Bxd7 Nf5 Qxe4
6 00:00 -0.03 e5 Qh5 Qb4 Bxd7+ Bxd7 Nf5 0-0-0
7 00:00 -0.47 e5 Qh5 Qb6 Bxd7+ Bxd7 Nf5 Bxf5 Qxf5 Rd8
8 00:01 -0.36 e5 Qh5 Qb6 Bxd7+ Bxd7 Nf5 Bxf5 Qxf5 Qa6+ Kg1 Rd8
9 00:03 -0.33 e5 Qh5 Qb4 Bxd7+ Bxd7 Nf5 0-0-0 Rc1+ Kb8 Re3 h6 Kg1 Bxf5 Qxf5
10 00:10 -0.36 e5 Nf5 Qxb5+ Rd3 Qa6 Kg1 b6 Rc1 Kd8 Nd6 Nc5 Rxc5 bxc5 Nxf7+
Kc7 Nxh8 Qxa2
11 00:23 0.31 e5 Nf5 Qxb5+ Rd3 Qa6 Kg1 Kd8 Nd6 Re8 Nxc8 Kxc8 Rxd7 Qc4
12 02:12 0.51 e5 Nf5 Qxb5+ Rd3 Qa6 Kg1 b5 Rc1 Qxa2 Ra1 Qxa1 Qxa1 Nc5 Nd6+
Kf8 Qa2
13 07:50 0.50 e5 Nf5 Qxb5+ Rd3 Qa6 Kg1 b5 Rc1 Qxa2 Ra1 Qxa1 Qxa1 Nc5 Nd6+
Kf8 Rc3
13 10:08 0.44 a6 Be2 Qe5 Rc1 Qxe4 Rhc3 0-0 Nf3 Nb6 Qd6 Nd5 Nd2 Qb4
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