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Building up a PGN (Portable Game Notation) database is one of the most effective ways to move from casual play to structured improvement. It serves as your personal chess diary, allowing you to archive games, build an opening repertoire, and identify recurring mistakes. 1. Getting Your Data: Where to Find PGNs
You need a PGN manager. The two best free options: build up your chess pgn
to organize these branches into a logical tree. Every time he lost a game online, he would "build up" his PGN by adding that game and finding where it deviated from Yusupov’s principles. Building up a PGN (Portable Game Notation) database
import chess.pgn