And, if a friend of theirs has already watched a course and created their PGN file, they simply ask them to send it their way so that they “know” the opening too. So many chess players genuinely believe that if they have the PGN of a particular opening, they already know it. On the one hand, it’s quite funny, but on the other, it’s quite sad. “Oooh, wow!! How did you learn all of that?” See This is a very powerful tool.“Well, I’m glad you asked.I can play the Queen’s Gambit, the Nimzo Indian, the Grunfeld, the King’s Indian, and of course, the Semi-Slav.” For example, create a 'tagfile', and write the following in it:Īnd you will get 500 files by ECO code, each containing only games in which both players have Elo at least 2400. You can also apply other filters like minium rating etc. "pgn-extract -E3 *.pgn" will create 500 files A00.pgn to E99.pgn. But instead of this, you can simply ignore at most 999 games if you have split the file in 1000 parts.Īfter doing all this, you can use pgn-extract to sort the contents of all these files into ECO codes. If you manage to run the split command, then the rest will be easy with small scripts (using e.g., bash, sed, awk, perl or python). If so, look at the head of the next file 38.pgn, and get the remaining part of the game from 38.pgn and add it at the end of 37.pgn and remove it from the beginning of 38.pgn.
For example, you can check the tail of each file, say file 37, to see if it has been split in the middle of a game. Maybe you can fix this issue manually after the split. The split may happen in the middle of a game. I hope you won't face memory issues in using this tool. It is also possible to specify the number of bytes in each file. Check "man split" to see what other options split offers. But I think zip itself allows the split option, so any other modern zip/unzip tool would have the option. The simplest usage will be something like the following (in a terminal), which will split a file into 1000 partsĭo this after extracting. You can perhaps use the linux split command to split the file into as many files as you want.
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