Winboard Forum

I tried CB8 and SCID so far, but the first one seems buggy in this
concern, when the latter lacks the option to specify a min move
number(and does not work like it should too), for what I will define
as a part-double.

For clarification of my needs:
I need a tool which finds all games, which have identical moves for
at least a certain number of moves, I want to specify myself.
(sth. between 15 and 30 normally)

May be Yace does this already? Any other tools out which are
capable of doing this?

Guenther

You could try fooling around with pgn-extract.

It has a "-b" option to set boundaries for the number of moves.
It has a "-d" option to form a duplicate pgn file.
It has a "-u" option to form a unique pgn file.

http://www.cs.kent.ac.uk/people/staff/djb/extract.html

-Norm

You could try fooling around with pgn-extract.

It has a "-b" option to set boundaries for the number of moves.
It has a "-d" option to form a duplicate pgn file.
It has a "-u" option to form a unique pgn file.

http://www.cs.kent.ac.uk/people/staff/djb/extract.html

-Norm

This is exactly what I have tried before you had posted it

Sadly PGNExtract can't do it either
The -b arg is just for game length boundaries not for length
of move sequences to be compared as double

It seems no tool exists, which can do what I want to do
and moreover I believe now the task is not trivial at all.
The tool must be able to sort all games first by ECO or similar
and then compare each game as a sequence with given length
to the next game.
Without sorting it needs to compare each game against all
games each time and that would slow it down a lot.

I have found a manual solution so far, with the help of CB8,
using a kind of pattern recognition.
First I sorted all games by ECO then I displayed all games
only as moves list and looked at it around the region of the move
number I wanted to have as *double margin* e.g. move 15.
I noticed that the Human eye is very good in recognizing patterns
between all the move lists, as identical sequences in more lines
following another create a pattern in the sea of characters, because
of identical spaces etc...
This method is very exhausting for the eyes though, but I needed
just 5 minutes anyway to find 241 games which had at least
one sequence up to 15 moves twice or more times.

Guenther

pgn-extract has a "-cfile" option that might be helpful. It says "Use file as a list of check files for duplicates."

Spikes book builder is perfectly capable in doing what I looked for!
I can import a PGN file into it and can specify the game length
in half moves for what I consider as a part_double.
Then I can set the min. number of games the same position should
have been occured.
And voila it generates a file with all FENs which fullfill my conditions.

My thanks to Volker and Ralf for this nice tool.

Guenther

where is the link for this?

did a google search for it came up with nothing..

Hi Roy,

you can download the Spike Bookbuilder from

http://spike.lazypics.de/dl_tools_en.html

Best
Ralf

Thank you very much!!