Crucially, Chessable allowed users to upload their own PGNs linked to official courses. By mid-July 2023, the “Community PGN” section had grown to 2.4 million files. The top user-generated PGN of the day was titled:

For the serious student, the PGN (Portable Game Notation) is that text. While Chessable is renowned for its video courses and MoveTrainer exercises, the platform’s ecosystem of PGN collections and "Repertoires" serves as the backbone for deep diving into chess history and theory.

: A tactics collection focused on pattern recognition through spaced repetition.

By mid-2023, Chessable’s library had expanded to include world-class repertoires from the likes of Fabiano Caruana and Anish Giri. The "15th July" snapshot represents a peak moment for community-driven PGNs—files that allow users to take their favorite courses into analysis engines like ChessBase or private Lichess studies for deeper engine-aided exploration. Breaking Down the "T Top" Collection