PGN Editor

A PGN editor and validator to create, edit, and verify chess games in Portable Game Notation. It supports standard headers, comments, variations, and NAGs. The tool parses PGN text, checks header completeness, validates move notation, and preserves metadata during edits. Conceptually, it treats a game as a tagged header block followed by a move sequence, ensuring structural integrity and proper formatting. Beneficiaries include players who prep study material, coaches who organize training games, and analysts who import games into databases. The editor’s value lies in enforcing consistency, catching syntax errors early, and enabling clean exports for publication or sharing.