Suppose I load a game from PGN on arena. Check screenshot.
If I want to add a variation to a main move, how can I do it? Is there any option to add a variation?
Chess Stack Exchange is a question and answer site for serious players and enthusiasts of chess. It only takes a minute to sign up.
Sign up to join this communityGo to the move where you want to insert a variation and make an alternative. Then, a popup will open:
If you want to make a variation mainline, then right-click one of its moves → Upgrade variation.
Note: This works as long as your "Default action for adding moves" is set to "Always ask". If Arena isn't working this way for you, then right-click on the move list. This will bring up a menu where you can set this option.