Better Your Chess

What for?

This project aims to help you learn from all the chess games you've played online, starting with a simple way to download an organized collection of your games!

On Chess.com, you can view your winrate by color, your best win, and analyze a game per day for free. Building on top of the Stockfish engine and python-chess, this package aims to give the user: winrates by opening, automatic tactic generation from your library, and common deviations from book moves.

Current features:

• winrate by opening
• rating distribution

In progress:

• automatic tactics generation from your library

Future features:

• show opening positions where you often deviate from book moves
• loss frequencies (checkmate, resignation, timed out)
• suggest grandmasters with similar repertoires

Components

1. notebooks/intro_to_python-chess.ipynb - intro to working with PGNs via python-chess and polyglot opening books.

2. scripts/pgn_downloader.py - download Chess.com games for a user, organized in year/month directories.

   python scripts/pgn_downloader.py username
   

3. chess_analytics/game_reader.py - implements a GameReader, class to work with PGNs.

4. chess_analytics/game_library.py - build a library of games from a directory, represented as a dataframe with 1 row per game.

   from chess_analytics.game_library import GameLibrary
   library = GameLibrary("data/user_games/user/")
   library.df.head()
   

   

5. scripts/plotting.py - visualize a library: opponent rating distribution, winrate by opening, and more.

6. scripts/generate_tactics.py - Automatically generate tactics from a library. This currently supports mate-in-Ns, producing a JSON and PNGs of the positions. 10 examples are in data/output/tactics/.

White to move & mate in two

Sources

• python-chess
• Stockfish
• Chess.com API
• Opera Game PGN (Paul Morphy vs. Duke of Brunswick and Count Isouard, 1958)
• Polyglot opening book - Marc Lacrosse
• Encyclopedia of Chess Openings