CHESS ANALYSIS WORKSPACE

Chess.

Explore positions and compare engine lines.

CURRENT POSITION

Select a piece to see its legal moves. Right-click two squares to draw or remove an arrow. Use ←/→ to step through moves and ↑/↓ to jump to the start/end.

Right-click a start square and then a destination to add an arrow. Click Highlight square to mark squares.

ACTIVE RECALL

Opening trainer

Practice the next move in openings from your imported games. The board becomes your quiz—try to recall the move before asking for a hint.

Import PGN games to build opening lines from your own play.

YOUR GAMES

Personal game insights

Import PGN games to see your opening habits and results. Add the exact player name used in the PGN headers to calculate your personal win, draw, and loss record.

Games stay in this browser unless you sign in to sync them with your account.

    YOUR IMPROVEMENT

    Progress dashboard

    BUILD A HABIT

    Weekly study goals

    Choose realistic weekly targets. Progress updates as you review games and practice your positions.

    STOCKFISH GAME REVIEW

    Game review & practice

    Analyze game positions to estimate move quality and accuracy.

      Choose a mistake to retry its position.

      Coach insights use Stockfish's best moves and board state with readable rule-based explanations; move labels and accuracy are estimates, not official CAPS ratings.

      Review snapshots will appear here.

      STOCKFISH

      Candidate lines

      Analyzing the current position…

        Stockfish 19 Lite is running locally. Komodo is not included because it requires a separate license.

        POSITION TOOLS

        Load a position

        Custom board

        Castling

        Place pieces, choose the side to move and optional rights, then use the position.

        Load a position or game to analyze it.

        YOUR STUDY

        Analysis collections

        Collections are stored in this browser.

        LICHESS MASTERS · OAUTH

        Opening explorer

        Sent only to Lichess and kept in memory until you refresh. Create a token.

        Connect a Lichess token to load Masters database statistics.

          Sample master games

            SYZYGY TABLEBASE

            Endgame oracle

            Checking position eligibility…

              Uses Lichess's public tablebase service for positions with up to 7 pieces; requires an internet connection.

              POSITION INSIGHTS

              Tactics & phases

              PAWN PROMOTION

              Choose your piece