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Subject: Re: A Test Position - Sacrifice for an Attack

Author: Chessfun

Date: 19:06:13 10/23/00

Go up one level in this thread

On October 23, 2000 at 20:46:08, Jeremiah Penery wrote:

>On October 23, 2000 at 19:44:15, Chessfun wrote:
>
>>On October 23, 2000 at 15:01:07, Jeremiah Penery wrote:
>
>>>[D]r4rk1/p1q1nppp/b2b4/2nP4/1P3p2/P1N2N2/B1P3PP/R1BQK2R w - -
>
>
>>Gambit 1.0 Cel 433 48 mb.
>>; 00:00:00.6  1.   Score: 4.06   depth: 7 bxc5 Bxc5 Ne4 Rae8 c4 Nc6 Nd2
>>; 00:00:00.3  1.   Score: 4.06   depth: 7 bxc5 Bxc5 Ne4 Rae8 d6 Qc6 Nxc5 Nd5+
>>Kd2 Qxc5
>>; 00:00:02.1  1.   Score: 3.70   depth: 8 bxc5 Rfe8 Ne4 Nf5 Ng5 Bxc5 Qg4 Qe5
>>; 00:00:08.1  1.   Score: 3.40   depth: 9 bxc5 Bxc5 Ne4 Nf5 c4 Rfe8 Qe2 Ne3 Nfg5
>>Bd4
>>; 00:00:25.9  1.   Score: 3.00   depth: 10 bxc5 Rfe8 Ne4 Nf5 Ng5 Bxc5 c4 Bd4 d6
>>Qxd6
>>; 00:00:44.2  1.   Score: 2.96   depth: 11 bxc5 Rfe8 Ne4 Nf5 Ng5 Bxc5 d6 Nxd6
>>Bd5 Nxe4 Bxe4
>>; 00:04:53.4  1.   Score: 1.64   depth: 12 bxc5 Rae8 Ne2 Nxd5 c4 Nc3 cxd6 Qc5 d7
>>Rxe2+ Qxe2 Nxe2 Kxe2 Bxc4+ Bxc4 Qxc4+
>>; 00:07:21.9  1.   Score: 1.64   depth: 13 bxc5 Rae8 Ne2 Nxd5 c4 Nc3 cxd6 Qc5 d7
>>Rxe2+ Qxe2 Nxe2 Kxe2 Bxc4+ Bxc4 Qxc4+
>>; 00:17:02.6  1.   Score: 1.42   depth: 14 bxc5 Rfe8 Ne2 Qxc5 c4 Nxd5 Qc2 Rac8
>>Rf1 Bxc4 Bxc4 Qxc4 Qxc4 Rxc4
>
>Thanks for the output Sarah. :)
>
>I'm somewhat disappointed that GT shows such a high score for white here, and
>I'm interested to know if you make the move bxc5 what it will see for black.
>
>Jeremiah


I'm not. I doubt many programs could resist bxc5 though admit I have
not checked any others.

I think more important are the moves in the line posted as they follow
the game score after bxc5.
16. bxc5 Rfe8 17. Ne2 Qxc5 18. c4 Nxd5 After this which is the
line Gambit originally posts. Gambit now evals the following this
also follows the game 19. Qd4 Qxd4 20. Nxd4 Bc5

Now in the game played was;
21. Kd2 Gambit prefers Kd1 and after 21...Ne3+ posts;

22. Bxe3 Rxe3 23. Nc2 Rd8+ 24. Ke1 Re6 25. Rd1 Rde8 26. Rd2 Bb7
27. Rf1 g5 28. Rf2 Bxf2 29. Kxf2 f5 30. g3 Re4
which it evals as +0.58 Depth 15.

In the line 21. Kd2 if forced it follows;
21. Kd2 Ne3 22. Kc3 Rac8 23. Now Nxf4 instead of Bb2 23....Bxd4+
24. Kxd4 Nc2+ 25. Kc3 Nxa1 evals as;

26. Kb2 Bxc4 27. Bxc4 Rxc4 28. Kxa1 f6 29. g3 Rd8 30. Re1 Rc2
31. h3 Rb8 32. Nd5 Rb3 33. Re8+ Kf7 34. Re7+ Kf8
+0.60 Depth 15.

Sarah.

• Re: A Test Position - Sacrifice for an Attack Howard Exner 21:53:05 10/23/00
  • Re: A Test Position - Sacrifice for an Attack Robert Hyatt 06:07:56 10/25/00
    • Re: A Test Position - Sacrifice for an Attack Howard Exner 08:24:17 10/25/00
      • Re: A Test Position - Sacrifice for an Attack Robert Hyatt 12:29:44 10/25/00
      • Re: A Test Position - Sacrifice for an Attack David Eppstein 09:34:14 10/25/00
  • Re: A Test Position - Sacrifice for an Attack David Eppstein 22:18:25 10/24/00
    • Re: A Test Position - Sacrifice for an Attack Howard Exner 08:04:46 10/25/00

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