Chess Outline

Visualize square control, threats, pins, and forks on chess.com

Chess Outline — a visual analysis tool for chess.com that adds real-time overlays to the board. Features: • Square control — see which squares each side controls and the balance of power • Move preview — hover over a piece to see how its moves change the control map • Pins — highlights pinned pieces (absolute and partial pins) • Forks — detects and highlights fork opportunities • Checks — shows check and mate threats • Hanging pieces — instantly spot undefended pieces • Material count — track material advantage Perfect for chess training, game analysis, and improving tactical vision. Works with live games, puzzles, and analysis board on chess.com. All analysis runs locally in your browser. No data is collected or sent anywhere. Settings are saved between sessions. Toggle features on/off from the popup.