FEN-based positions
Every exercise starts from a precise FEN position and serves SAN solutions for consistent play analysis.
Structured chess puzzles, clean progression, and practical tactical habits.
Caissa focuses on puzzle quality, consistent training flow, and reliable backend APIs for mobile apps.
Every exercise starts from a precise FEN position and serves SAN solutions for consistent play analysis.
Track each puzzle as pending, in_progress, or completed to keep momentum.
Sign in once, fetch your next puzzle, solve from board position, and keep your streak alive every day.
Can I use Caissa across devices? Yes. Can I review solved puzzles? Yes, using your exercise state and solution history.