Explore the tools and technology that power our comprehensive chess analysis service.
Every move in your game is automatically classified as Brilliant, Great, Best, Book, Good, Inaccuracy, Mistake, or Blunder. Understand exactly where you went wrong and where you played exceptionally well. Our classification system uses advanced evaluation algorithms to provide accurate assessments of each move's quality.
Get a comprehensive accuracy percentage for both players, showing how closely your moves matched the engine's top choices. Track your improvement over time and compare your accuracy across different game phases (opening, middlegame, endgame). This metric helps you identify which parts of your game need the most work.
For every position, see what the engine recommends as the best move, along with alternative strong moves. Understand the evaluation difference between your move and the engine's suggestion. Visual arrows on the board show you exactly where pieces should move, making it easy to understand complex tactical ideas.
Automatically identify which chess opening was played in your game, from popular openings like the Sicilian Defense to rare variations. Learn opening theory and discover where you deviated from established lines. Our extensive opening database covers thousands of named variations to help you build your opening repertoire.
Visualize the entire game with our interactive evaluation graph. See at a glance where advantages shifted, where critical mistakes were made, and how the game's momentum changed. Click any point on the graph to jump directly to that position on the board for detailed analysis.
Import games from anywhere: paste PGN notation directly, fetch games from your Chess.com account, or import from Lichess. Upload PGN files or drag-and-drop them into the analyzer. We support all standard PGN formats and can handle games with variations, comments, and annotations.