Is ChessGrade free?
Yes. The free plan gives access to Tactical Training, Woodpecker, Progressive Mode, Visualization, and Endgame Training at no cost. Premium unlocks unlimited game analysis, a detailed profile, and removes ads.
Do I need to install anything?
No. ChessGrade works 100% in the browser on any computer with Windows, macOS, or Linux. No app to download.
How does the puzzle rating system work?
Each puzzle has a rating calculated by the Glicko-2 system, based on the performance of thousands of players. When you solve it correctly, you gain points; when you fail, you lose. The system learns your level and delivers puzzles calibrated to your optimal development zone.
What is the Woodpecker Method?
It's a training technique described in the book Pump Up Your Rating by Axel Smith. It involves solving a fixed set of puzzles from start to finish, then repeating the same set. Each cycle you should be faster. After a few cycles, tactical patterns are absorbed into long-term memory and emerge instinctively during games.
How does the AI game analysis work?
You import a PGN or paste the text directly. Stockfish analyzes each move and classifies errors, inaccuracies, and good moves. Gemini generates a report in natural language with critical moments, recurring patterns in your style, and personalized study suggestions.
How many puzzles are available?
The database has 3.1 million puzzles covering all major tactical themes: fork, skewer, pin, discovered check, double check, deflection, sacrifice, interference, zugzwang, and dozens of others. Filterable by theme, rating, opening, and game phase.
Is my progress saved?
Yes. All your puzzle history, rating, streaks, practiced themes, and analyzed games are saved to your account. You can access detailed statistics at any time.
Can I use ChessGrade on mobile?
ChessGrade is designed for desktop or laptop use. The chessboard requires click precision that makes the experience on small screens less comfortable. A mobile-optimized version is being considered for future releases.