The Chess Opening Trainer add-on is now available for download.
It turns a chess game collection in PGN (Portable Game Notation) format into a deck of Anki cards. All moves for one side in the PGN file will become “questions”, all moves of the respective other side will become correct “answers”. Nested game trees (variations) are supported. This will allow you to study individual chess openings or an opening repertoire with flash cards.
The add-on will also create board diagrams for all positions and it supports comments, annotations, and arrows and circles for graphical enhancement.
More information is available on the add-on’s GitHub and in an English blog post or its German counterpart.