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Subject: Re: Chessbase's comment on Fritz's Bc2............

Author: Andreas Guettinger

Date: 00:52:52 11/22/05

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On November 22, 2005 at 03:10:35, Ernst Walet wrote:

>...makes me sick in the stomage.
>
>QUOTE
>
> When you play through this game, take a look at the forced sequence commencing
>with Fritz’ …Bc2, and count how many ply there are from there to the position
>when Matthias Feist resigned on Fritz’ behalf. Then add a few more ply because,
>in the final position, although Black will inevitably be saddled with a decisive
>material deficit, at that moment the program still had two minor pieces for a
>rook. So the depth to which Fritz would have needed to search in the critical
>variation, in order to realise that …Bc2 was a losing move rather than a winning
>one, was quite beyond the program’s capability.
>
>UNQUOTE
>
>So much for the human like "knowledge" of Fritz.
>
>Ernst.

That CB statement is ridiculous. As you can see from the analysis I posted on
the previous thread, Hiarcs 9.6 evaluates Qxg3 and Bc2 with a difference of +3
after 10min search on a terribly old 400 Mhz computer.
Furthermore it doesn't explain why other users Fritz 9 seems to stick Qxg3.

- Andy

------- snip

Hiarcs 9.6 UCI (400Mhz)

6 -2.27  Qxg3+ Kxg3 f5 Bd1 f4+ Kg4 f3 Kxg5 (1.38)
 6 -2.40  Qxg3+ Kxg3 f5 h4 f4+ Kg4 f3 (1.75)
 7 -2.49  Qxg3+ Kxg3 f5 Rg1 Bc4 Bd1 Rxe3+ Kf2 f4 Rxg5+ Kh7 (2.85)
 8 -2.30  Qxg3+ Kxg3 f5 Rg1 f4+ Kf2 fxe3+ Kxe3 Bc4+ Kd2 Rd3+ Kc2 Bxb3+ Nxb3 Kh7
Rxg5 Rxh3 (4.44)
 9 -2.30  Qxg3+ Kxg3 f5 Rg1 Bc4 Bxc4 dxc4 Kh2 Rxe3 Rxg5+ Kh7 Rxf5 Rd3 b5 (8.97)
10 -2.55  Qxg3+ Kxg3 f5 Kf2 f4 Rg1 fxe3+ Kxe3 Bc4+ Kd2 Rd3+ Kc2 Bxb3+ Nxb3 Rxh3
Rxg5+ Kf7 Nc1 Rh2+ (22.77)
11 -2.87  Qxg3+ (38.99)
11 -3.32  Qxg3+ Kxg3 f5 Rg1 f4+ Kh2 fxe3 Rxg5+ Kh7 h4 e2 Rh5+ Kg7 Rg5+ Kh6 Rg1
Kh5 Re1 Kxh4 (56.92)
12 -3.34  Qxg3+ Kxg3 f5 Rg1 f4+ Kf2 fxe3+ Kxe3 Bc4+ Kd2 Rd3+ Kc2 Bxb3+ Nxb3 Nxa4
Rxg5+ Kf7 Nc1 Rxd4 Ne2 Rxb4 (209.53)
13 -3.27  Qxg3+ Kxg3 f5 Rg1 f4+ Kf2 fxe3+ Kxe3 Bc4+ Kd2 Rd3+ Kc2 Bxb3+ Nxb3 Nxa4
Rxg5+ Kh7 Nc1 Rxd4 Ne2 Rd3 (503.89)

After 39. ... Bc2 :

6 -2.15  Qxh4 gxh4 Bxc2 Rxc2+ Kh1 Nxa4 Nb7 Rb2 Nxd6 (0.67)
 7 -2.15  Qxh4 gxh4 Bxc2 Rxc2+ Kh1 Nxa4 Nb7 Rb2 Rg1+ Kf8 Rg4 (1.23)
 8 -2.15  Qxh4 gxh4 Bxc2 Rxc2+ Kh1 Nxa4 Nb7 Rb2 Rg1+ Kf8 Nxd6 Rxb4 (2.41)
 9 -1.83  Qxh4 (4.01)
 9 -1.75  Qxh4 gxh4 Bxc2 Rxc2+ Kh1 Nxa4 Nb7 Rb2 Nxd6 Rxb4 Nf5 Nc3 (4.56)
10 -1.99  Qxh4 gxh4 Bxc2 Rxc2+ Kh1 Kf8 b5 axb5 axb5 Rb2 Nc6 Rxb5 (7.58)
11 -2.22  Qxh4 gxh4 Bxc2 Rxc2+ Kh1 Kf8 Kg1 Ra2 (15.64)
12 -1.90  Qxh4 (36.36)
12 -1.38  Qxh4 gxh4 Rc1 Rxb3 Nxb3 Bxb3 b5 axb5 a5 Nd7 Rc8+ Kh7 Rc7 Nf6 Rb7 Kg7
(39.03)
13 -1.06  Qxh4 (57.63)
13 -0.83  Qxh4 gxh4 Rc1 Rxb3 Nxb3 Bxb3 b5 axb5 a5 Na4 Rc8+ Kh7 a6 Bd1 a7 Bf3+
Kh2 (65.67)
14 -0.51  Qxh4 (130.64)
14 -0.34  Qxh4 gxh4 Rc1 Rxb3 Nxb3 Bxb3 a5 Nc4 b5 Ba4 bxa6 Bc6 Kf2 Kf8 a7 Ba8 a6
(143.09)
15 -0.36  Qxh4 gxh4 Rc1 Rxb3 Nxb3 Bxb3 a5 Nc4 b5 Ba4 bxa6 Bc6 Kf2 f5 a7 Ba8 a6
(292.94)
16 -0.19  Qxh4 gxh4 Rc1 Rxb3 Nxb3 Bxb3 a5 Nc4 b5 Ba4 bxa6 Bc6 Kf2 f5 a7 Kf7 a6
Ba8 (589.79)

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