Chess Opener Lite

Discover chess openings, develop your repertoire, and practice key variations for any line.

Key Features

- Interactive opening explorer with detailed game statistics

- The complete Encyclopedia of Chess Openings (ECO)

- Compare ECO and opening tree moves side-by-side in any position

- Export any opening sequence to PGN format

- Create and manage your personal opening repertoire

- Add personal notes or edit comments on any move

- Automatically classify move sequences using the ECO system

- Opening explorer highlights moves already in your repertoire

- Chess database accounts for all transpositions automatically

- Interactive trainer to memorize openings and variations

- Train multiple variations at once against random moves from your repertoire

- Set a custom starting position for focused training

- Track and monitor your training progress

- Customize chessboard appearance and piece sets

- Full dark mode support

- Functions entirely offline

Master classic openings like The Queen’s Gambit, The King’s Indian Defense, and many others!

CHESS OPENING EXPLORER

Search the Encyclopedia of Chess Openings or navigate the opening tree visually. Swipe left or right to switch between tools in any position.

BUILD YOUR OPENING REPERTOIRE

Add your preferred opening lines directly from the explorer. You can rename openings and organize your repertoire as you wish.

OPENING TRAINER

A straightforward and effective method to memorize your repertoire's variations. Train for white, black, or both sides. Optionally, train all variations simultaneously. The trainer selects opponent moves randomly from your repertoire. Track your progress and view detailed statistics.

Upgrade to Chess Opener PRO to access premium features:

- Unlimited repertoire size and depth

- An opening tree six times larger with advanced statistics

- Database of 100+ top grandmaster repertoires

- Powerful integrated chess engine analysis

- Import openings via PGN format