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Subject: Fritz doesn't seem to find a move in Cozio?1.e4 Nc6 2.Nf3 e5 3.Bb5 Nge7

Author: Marian Predescu

Date: 20:02:59 09/25/99


After

1.e4 Nc6 2.Nf3 e5 3.Bb5 Nge7
(Cozio Defense)
4.c3!? d5
(I assume that this is theory. I can't recall anyone playing this on move 4
against me before)

My question i, how come Fritz 5.00 doesn't consider 4.c3 at all, when it is the
second more popular move according to the databases?

Details:

Old Fritz 5.00 itself likes other moves, not 4.c3, but:

+=(0.31)4.0-0, or
+=(0.28)4.Nc3,
=(0.25) 4.d3,
=(0.16) 4.Qc2

After 4.c3 it gives:
=(0.19)4...d5
=(0.19)4...a6

On a depth of about 14/40...

b) An opening tree of the Ruy Lopez Cozio old database from Univ of Pitt shows
that actually that out of 406 games

4. 0-0 was played in 202 games with
1-0    37%
1/2    29%
0-1    32%

But the next most popular is:

4.c3 in 90 games with

1-0    41%
1/2    34%
0-1    24%

4. Nc3 in 54 games
1-0    51%
1/2    31%
0-1    16%

4. d4 in 53 games
1-0    32%
1/2    35%
0-1    32%

Found more games in another database(added them to the tree), so this time out
of 1059 games, but... nothing changed much(maybe there was some duplication).

Who is right in a case like this: Fritz or the databases?

Just a question from the chess point of view, about the value of "infinite
analysis" of chess software like Fritz...

How much is one supposed to read in either the computer or the database?



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