Part of Plus
Caïssa
A real analysis program in your browser. Board, variations, engine, your own game database and a coach who tells your game in words.
See PlusA real variation tree
Play something else on any move and the original line simply stays. With comments, annotation marks and arrows on the board, just like in a chess book.
Stockfish thinking along
The engine runs on your own computer and keeps calculating while you look. Up to five lines side by side, and a line you click lands straight in your analysis.
Your whole chess life in one place
Enter your Lichess or Chess.com username and all your games come in, topped up every night. Or drop a PGN file into it.
Search by position
Set up a position and see every game it ever occurred in, with the results. Yours, the club's, and the masters'.
The perfect endgame
Under seven pieces the evaluation turns into a hard verdict: won, drawn or lost, with the number of moves. No more estimating.
Caissa writes your report
Not a list of mistakes but the story of your game: how you came out of the opening, where it turned, and two things to work on that link to the trainer.
The workbench
Board on the left, notation on the right. You play both colours, branch off wherever you like and everything saves itself. Arrow keys walk your line, and one key turns a variation into the main line.
The engine, live
Switch it on and the depth climbs while you watch. Because it runs on your computer it costs the club nothing and it is always there, even when everyone is analysing at once.
Your game database
Everything in one place: what you play here, what you play elsewhere, and the master games. Search by player, year or opening and open any game in the workbench with one click.
Ready to really understand your games?
Caissa is part of Plus, together with the chess trainer, the coach during your game and all board themes.
See PlusCaissa locks while you are playing a game yourself. An engine next to a live game is cheating, and that line stays hard.