Dive into chess openings, develop your personal repertoire, and practice key variations.
Key Features
- Interactive chess opening tree with game statistics
- Complete Encyclopedia of Chess Openings (ECO)
- Compare ECO recommendations with opening tree moves in any position
- Export opening lines in PGN format
- Create and manage your personal opening repertoire
- Add or edit move annotations
- Auto-classify move sequences using the ECO system
- Opening explorer highlights moves already in your repertoire
- Comprehensive database includes all transpositions
- Interactive trainer to master chess openings and variations
- Practice 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 sets
- Dark mode support
- Fully functional offline
Master popular 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. Swipe left or right to toggle between exploration tools in any position.
BUILD YOUR OPENING REPERTOIRE
Add your preferred opening lines to your repertoire using the explorer. Customize opening names and organize your repertoire as needed.
OPENING TRAINER
An efficient method to memorize repertoire variations. Train white's moves, black's moves, or both simultaneously. Optionally practice all variations at once against randomly selected opponent moves from your repertoire. Track your progress with detailed statistics.
Upgrade to Chess Opener PRO for enhanced capabilities:
- Unlimited repertoire size
- Unlimited opening depth
- 6x larger opening tree with detailed statistics
- Database of 100+ grandmaster repertoires
- Advanced chess engine analysis
- Import openings via PGN format
What's New in Version 1.21.1
- Final score display no longer obstructs the chessboard
- Share/export games and positions during training
- Toggle comment visibility
- Additional improvements while maintaining a clean, focused training environment
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