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Subject: Nice move for the not-so-strong engines/programs

Author: Stan Arts

Date: 11:27:47 01/12/03


Hello!

In one of the games posted by Sedat Cambaz a few days ago, between Fritz 8 and
The King, the following position occured:

3r1r1k/2q3bp/3N4/p1P1n1p1/P2BPp2/5P2/4Q1PP/R2R2K1 b - - 0 1

And black played, Nxf3!

It's a nice move for humans, and chessprograms to the lower end of the rating
lists. :)   (It takes 9 halfmoves to see the combination)

The strong programs probably find it in a second or so..but how long do the
not-so-strong programs take to find Nxf3 here? (never see too many search-
results of the weaker programs posted :(  )

This is what my program S-chess (v1.41) thinks of this position on my P3-550mHz
(and thinking in the background while I am surfing on the internet)
It finds Nxf3 on the 9th ply, and after an hour search this is what my program
thinks:

3  -237  0    1919      Bg7-f6 a8-a8
3  -233  0    2889      Qc7-e7 a8-a8
4  -255  0    9529      Qc7-e7 Nd6-f5 Qe7-d7 Nf5xg7
4  -253  0    11918     Ne5-c6 Bd4xg7 Kh8xg7 Kg1-h1
4  -252  0    24029     Qc7-d7 Nd6-f5 Rd8-c8 Nf5xg7
4  -247  0    40933     Rd8-a8 Nd6-f5 Ra8-c8 Nf5xg7
5  -238  1    68768     Rd8-a8 Nd6-f5 Ra8-d8 Nf5xg7 Rd8xd4
5  -233  1    97594     Qc7-e7 Bd4-c3 Rd8-a8 Bc3xe5
5  -211  2    130246    g5-g4 Nd6-f5 g4xf3 g2xf3 Rd8-c8
6  -301  4    345677    g5-g4 Nd6-b5 Qc7-b8 f3xg4 Qb8-b7
6  -249  6    514324    Rd8-a8 Nd6-f5 Bg7-f6 Qe2-d2 Ne5-c6 Bd4-b2
6  -245  9    742263    Ne5-c6 Bd4xg7 Qc7xg7 Qe2-b5 Qg7-d7 Nd6-f5
7  -241  21   1581640   Ne5-c6 Bd4xg7 Qc7xg7 Qe2-b5 Rd8-c8 Nd6xc8 Qg7xa1
7  -221  26   1909602   g5-g4 f3xg4 f4-f3 Qe2-a2 Ne5xg4 Bd4xg7 Qc7xg7
8  -298  166  11040531  g5-g4 f3xg4 f4-f3 Qe2-f2 f3xg2 Nd6-f5 Rd8-c8 Qf2xg2
8  -247  183  12557616  Ne5-c6 Bd4xg7 Qc7xg7 Qe2-b5 Qg7-d7 Nd6-f7 Qd7xf7 Qb5xc6
9  -219  820  58315863  Ne5-c6 Bd4-b2 Qc7-e7 Rd1-d5 Rd8-b8 Nd6-b5 Nc6-e5 Nb5-d6
g5-g4
9  -204  991  68947710  g5-g4 Nd6-b5 g4xf3 g2xf3 Qc7-f7 Qe2-g2 Qf7-h5 Ra1-a3
Rd8-c8
9  6     1157 81019201  Ne5xf3 g2xf3 Bg7xd4 Rd1xd4 Qc7xc5 Qe2-c4 Qc5xc4 Rd4xc4
Rd8xd6
10 -15   1413 103620606 Ne5xf3 g2xf3 Bg7xd4 Rd1xd4 Qc7xc5 Qe2-c4 Qc5xc4 Rd4xc4
Rd8xd6 Kg1-h1
11 6     3017 179367100 Ne5xf3 g2xf3 Bg7xd4 Rd1xd4 Qc7xc5 Qe2-c4 Qc5xc4 Rd4xc4
Rd8xd6 Rc4-c7

Stan




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