Chess Opener Lite

Dive into chess openings, develop your personal repertoire, and train your understanding of critical opening lines.

Key Features

- Comprehensive chess opening explorer with advanced statistics

- Access the complete Encyclopedia of Chess Openings (ECO)

- Directly compare ECO reference moves with the opening tree in any position

- Download and share your lines as PGN files

- Create and manage a personalized opening library

- Annotate moves with your own commentary and notes

- Auto-classify move sequences with the official ECO framework

- Opening explorer visually distinguishes moves already in your repertoire

- Fully integrated database accounts for all transpositions

- Interactive training module to memorize your openings and variations

- Train multiple lines simultaneously against random moves from your repertoire

- Set specific positions as the starting point for any training session

- Monitor your detailed training history and improvement

- Personalize chessboard theme and piece sets

- Includes a full dark mode

- Full offline functionality

Master classic openings like The Queen’s Gambit, The King’s Indian Defense, and countless others.

CHESS OPENING EXPLORER

Search the ECO or visually navigate the opening tree. Simply swipe to toggle between exploration tools in any given position.

BUILD YOUR OPENING REPERTOIRE

Add preferred lines to your collection through the explorer. You retain full control to rename and reorganize your openings at any time.

OPENING TRAINER

An intuitive, powerful method to internalize your repertoire's variations. Train exclusively for White, Black, or both sides. Choose to drill specific lines or all variations at once, with the trainer selecting responses randomly from your repertoire. Track your performance with detailed progress statistics.

Upgrade to Chess Opener PRO for premium capabilities:

- No limits on repertoire size

- Unlimited opening line depth

- A 6x larger opening tree with enriched game stats

- Access a database of 100+ top grandmaster repertoires

- In-depth chess engine analysis

- Seamlessly import openings via PGN files