HELP me : Cut Move in PGN

[janggi-korea]

Cut Move in PGN

I want to delete all 12+ moves of each game from thousands of pgn files.
For example, from 12 movements to the end of the game.

Does anyone know how to do it?

[janggi-korea]

Cannot use pgn-extract because it is not a chess pgn.

[Dann Corbit]

Assuming the game score is similar to other chesslike games, the solution is to tokenize the game moves, and then remove from the tail of the list. Most efficient in a compiled language, it could even be performed using sql. If the games are already in a sql database, it might even be trivial.

[glennsamuel32]

Cut Move in PGN

I want to delete all 12+ moves of each game from thousands of pgn files.
For example, from 12 movements to the end of the game.

Does anyone know how to do it?

1. Download the latest pgn-extract

https://www.cs.kent.ac.uk/~djb/pgn-extr ... xtract.exe

2. Place the pgn and pgn-extract into a folder, open a command prompt

3. Type pgn-extract --dropply 24 -onew.pgn xxx.pgn

This will remove the first 12 moves of each game
12 moves = 24 ply
xxx.pgn is your original pgn
new.pgn is the resulting pgn

If you have 1,000s of pgns, merge them all into one first

1. Place pgns into a folder and run the command

copy *.pgn new.pgn

2. You may have to clean the newly created pgn

pgn-extract -7 -C -onew.pgn xxx.pgn

3. Run pgn-extract with the dropply flag...

[Ozymandias]

Cut Move in PGN

I want to delete all 12+ moves of each game from thousands of pgn files.
For example, from 12 movements to the end of the game.

Does anyone know how to do it?

You can go with this tool:

=========================(56) truncate =============================

"truncate" counts the number of plies (half-moves) and then removes
any plies occurring after a user-specified number. If a game has
fewer plies than the user-specified number, that game is output
without change. Results are not removed.

"truncate" removes existing "PlyCount" tags. New "PlyCount" tags can
be inserted using "plyCount".

"truncate" removes comments, nags, variations, and major symbolic
annotation symbols (!, !!, ?, ??, !?, ?!, +-, -+, +/-, -/+, +=,
=+, +/=, =/+, =, ~, and N), if present.

"truncate" removes "en passant" indicators "ep", "e.p." and "/ep",
if present, so that they do not distort the ply count.

Syntax: truncate filename.pgn maximum_plies

Example: truncate alpha.pgn 50

Output: outU.pgn

Comments:

1. To remove all game moves but leave the results:

truncate alpha.pgn 0

[janggi-korea]

to Ozymandias

you are right
Thank you. You are a very good programmer.

[Ozymandias]

To be clear, this Norm's work, I'm only a user.