Random
Lines shuffled randomly. Perfect for testing true recall and simulating real game pressure.
Test Recall
Works Offline
Master Your Opening Repertoire
Import your PGN files. Train against every variation. Track your progress over time. Your chess preparation, perfected.
3 Training Modes
100% Offline Ready
Free Open Source
Training Modes
Three ways to sharpen your repertoire
Choose the training style that matches your goals. Test recall, build systematically, or focus on weak spots.
Structured
Lines grouped by variation. Ideal for learning new openings or reinforcing structure.
Learn Systematically
Priority
Weak lines first, based on your mistake history. Focus where it matters most.
Target Weaknesses
94% Current Accuracy
Track Progress
Watch yourself improve
Every training session is tracked. See your accuracy evolve over time, identify problem lines, and measure total time invested.
Accuracy Tracking Session-by-session progress charts
Problem Lines Identify and focus on weak spots
Time Tracking Monitor your training investment
Offline First
Your repertoire lives on your device. Train anywhere—subway, plane, cabin in the woods. No internet required.
Optional Cloud Sync
Sign in to sync across devices. Your openings and progress, everywhere you need them.
Ready to master your openings?
Import your first PGN and start training in under a minute.
Get Started