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Subject: Re: What says you Christophe?

Author: Uri Blass

Date: 12:57:14 09/03/01

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On September 03, 2001 at 14:50:27, Eduard Nemeth wrote:

>I played a game against Tiger 14 today (120'/40 Level), see my post "Golden
>eyes", and Tiger thinking and thinking...but makes bad moves. Ok, this first
>game was a HARD tactical position for computers.
>
>I played now an another game against Tiger 14 and I played the NORMAL "Two
>Kings" variation. But what makes Tiger? He played after 15 minutes (!) on a BAD
>move. I can this not understand, sorry!

I believe that the main problem of tiger here is
the fact that tiger is a preprocessor.

If you compare the evaluation after 12.Nf6+ gxf6 and the evaluation
after 12.gxf3 Ne7 you can see that tiger's evaluation is better after
12.gxf3 Ne7 and not after 12.Nf6+ gxf6 but tiger cannot see
it's evaluation after these moves in the root position.

Tiger14's analysis after 12.Nf6+ gxf6
Chess Tiger 14.0 - Blass,U
[D]r3k2r/ppp1Bp1p/2n2p2/7q/3p4/5b2/PPP2PPP/R2QR1K1 w kq - 0 1

Analysis by Chess Tiger 14.0:

13.Bxf6+ Kd7 14.Qxf3 Qxf3 15.gxf3 Rhg8+ 16.Kh1 Rg6 17.Bh4 Rag8 18.Re4
  =  (-0.12)   Depth: 8   00:00:00  94kN
13.Bxf6+ Kd7 14.Qxf3 Qxf3 15.gxf3 Rhg8+ 16.Kf1 Rg6 17.Bh4 Rag8 18.Bg3 Nb4 19.Re2
  =  (-0.18)   Depth: 9   00:00:00  195kN
13.Bxf6+ Kd7 14.Qxf3 Qxf3 15.gxf3 Rhg8+ 16.Kf1 Rg6 17.Bh4 Rag8 18.Bg3 Nb4 19.Re2
  =  (-0.18)   Depth: 10   00:00:02  509kN
13.Bxf6+ Kd7 14.Qxf3 Qxf3 15.gxf3 Rhg8+ 16.Kh1 Rg6 17.Bh4 Rag8 18.Rad1 a6 19.Bg3
h6 20.Re4
  =  (-0.06)   Depth: 11   00:00:04  1171kN
13.Bxf6+ Kd7 14.Qxf3 Qxf3 15.gxf3 Rhg8+ 16.Kh1 Rg6 17.Bh4 Rag8 18.Rad1 f6 19.Re3
f5 20.f4
  =  (-0.10)   Depth: 12   00:00:10  2554kN
13.Bxf6+ Kd7 14.Qxf3 Qxf3 15.gxf3 Rhg8+ 16.Kh1 Rg6 17.Bh4 Rag8 18.Rad1 a6 19.Bg3
h6 20.Kg2 f5 21.Re3
  =  (0.00)   Depth: 13   00:00:24  6135kN

(Blass, Tel-aviv 03.09.2001)


Tiger14's analysis after 12.gxf3 Ne7
Chess Tiger 14.0 - Blass,U
[D]r3k2r/ppp1nppp/8/7q/3pN3/5P2/PPP2P1P/R2QR1K1 w kq - 0 1

Analysis by Chess Tiger 14.0:

13.Qxd4 0-0 14.Nf6+ gxf6 15.Rxe7 Qxf3 16.Rxc7 Rac8
  =  (0.10)   Depth: 8   00:00:00  87kN
13.Qxd4 0-0 14.Nf6+ gxf6 15.Rxe7 Qxf3 16.Rxc7 Rac8 17.Qd7 Rxc7 18.Qxc7
  =  (0.10)   Depth: 8   00:00:00  136kN
13.Qxd4 0-0 14.Nf6+ gxf6 15.Rxe7 Qxf3 16.Rae1 Qc6 17.Qg4+ Kh8 18.Qf5
  ²  (0.54)   Depth: 9   00:00:04  849kN
13.Qxd4 0-0 14.Nf6+ gxf6 15.Rxe7 Qxf3 16.Rae1 Kh8 17.Qe4 Rg8+ 18.Kf1 Qh3+ 19.Ke2
  ²  (0.26)   Depth: 10   00:00:05  1144kN
13.Qxd4 0-0 14.Nf6+ gxf6 15.Rxe7 Qxf3 16.Qd3 Qxd3 17.cxd3 Rac8 18.Rc1 Rfe8
19.Rcxc7 Rxc7 20.Rxc7
  ²  (0.34)   Depth: 11   00:00:10  2169kN
13.Qxd4 0-0 14.Nf6+ gxf6 15.Rxe7 Qxf3 16.Qd3 Qxd3 17.cxd3 Rac8 18.Rc1 Rfe8
19.Rcxc7 Rxc7 20.Rxc7
  ²  (0.34)   Depth: 12   00:00:18  3899kN
13.Qxd4 0-0 14.Nf6+ gxf6 15.Rxe7 Qxf3 16.Qd3 Qxd3 17.cxd3 Rac8 18.Rc1 Rfe8
19.Rcxc7 Rxc7 20.Rxe8+ Kg7 21.d4
  ²  (0.32)   Depth: 13   00:00:40  8741kN

(Blass, Tel-aviv 03.09.2001)

Uri




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