Chess Opener Lite

Dive into chess openings, develop your personal repertoire, and practice opening variations.

Features

Chess opening tree with game statistics

Encyclopedia of Chess Openings (ECO)

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

Export chess openings in PGN format

Build your personalized opening repertoire

Add or edit move comments

Automatically classify move sequences using the ECO system

Opening explorer highlights moves already in your repertoire

Complete chess database including all transpositions

Interactive trainer to memorize openings and variations

Train multiple variations simultaneously against random opponent moves from your repertoire

Set custom starting positions for training

Monitor your training progress

Customize chessboard colors and piece designs

Dark mode support

Fully functional 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 browse the opening tree. Swipe left or right to switch between exploration tools in any position.

BUILD YOUR OPENING REPERTOIRE

Add favorite opening lines to your repertoire using the explorer. Edit opening names and organize them as needed.

OPENING TRAINER

An efficient method to memorize repertoire variations. Train white's moves, black's moves, or both simultaneously. Optionally train all variations at once against randomly selected opponent moves from your repertoire. Track your progress with detailed statistics.

Upgrade to Chess Opener PRO for advanced features:

Unlimited repertoire size

Unlimited opening depth

6x larger opening tree with game statistics

Database of 100+ grandmaster repertoires

Powerful chess engine analysis

Import openings in PGN format