Have a look at ChessX (https://sourceforge.net/projects/chessx/).
About the opening repertoire, I have a good experience with a hierarchic folder tree, something like this:
- in the 'Openings' folder, create a folder called 'Sicillian Defence (1. e4 c5)';
- in that folder, create folders like 'Open Sicillian (2. Nf3)', 'Closed Sicillian (2. Nc3)' and 'Smith-Morra Gambit (2. d4)';
- in the Open Sicillian folder, create folders '(2. ... d6 3. d4 cxd4 4. Nxd4)' and '(2. ... Nc66 3. d4 cxd4 4. Nxd4)'; and
- in the first of those folders, create a file 'Najdorf Variation (4. ... Nf6 5. Nc3 a6).pgn'.
The advantage of this system is that your Najdorf Variation file starts branching on the move 6, not on the move 1, 2 or 3. And whenever a file is too robust, you can split it into several smaller files in this fashion. I've been using Arena with this system and it's not that bad I think.
Hi guys, I am currently working on my opening repertoire and I am writing down my lines in PGN's to make studying them easier than browsing from page to page in my books, and PGN's also help me create my own lines and preferences. I just have one problem, I use ArenaChess 3.5 for this task, and when my variations get subvariations and so on, the overview is just impossible, I lose track of everything in the PGN's, when you add a variation to the main line it is in square brakets and easy to identify, but when you keep adding variations to the variations they become normal brakets all on the same line of text and keeping a good overview becomes almost impossible, do you guys have any good alternative ( I tried ChessPositionTrainer but I can't get the hang of it..., I prefer working on PGN's)