Caissa Chess Companion

Offline Stockfish 19 analysis with move arrows, opponent predictions, eval tracking, and game reviews for Chess.com and Lichess.

Best move arrows, live evaluation, and clear chess coaching on lichess.org and chess.com. Caissa is a chess study companion that works directly on the board while you play or review games. • Local Stockfish analysis with Stockfish 19 and 18, live evaluation, and best move arrows • Clear coaching that explains positions and ideas in simple language • Adjustable engine strength with depth, MultiPV, skill level, and Elo controls • Game insights including opening names, evaluation graphs, tactics, traps, hanging pieces, and draw advice • Opponent prediction to help you think ahead during their turn • Game reviews with accuracy and opponent playing style • Customizable appearance with arrow, evaluation bar, layout, and hint controls All engine analysis happens locally on your device. No account is required and no gameplay data is collected. 3.2.0 A major upgrade focused on stronger analysis, better reliability, and more useful chess insights. • Stockfish 19 & 18 Both engines are bundled offline and can be switched instantly. • Engine Recovery Automatically rebuilds the engine if it gets stuck. • Stable Arrows Improved turn tracking, orientation detection, restart handling, and smoother arrow animations. • Opponent Prediction Predictive arrows now appear during your opponent's turn. • New Sidebar Tools Evaluation graph, opening names, hanging piece alerts, tactic badges, Trap Radar, Draw Advisor, game reviews, and opponent profiles. • Fixed Controls Engine strength, MultiPV, depth, skill level, Elo, layouts, copying, exporting, and feedback controls now work properly. • Appearance Updates Live arrow previews and fully working customization controls. • Visual Improvements Cleaner layouts, responsive controls, and a redesigned update popup. 3.3.1 • Fixed minor issues.