Question 1

What is CaissaLM?

Accepted Answer

CaissaLM is an adaptive chess coach powered by AI. It names the exact patterns you missed — pins, skewers, forks, discovered attacks, back-rank weaknesses — verified on the board, never made up. The opponent is Maia, a chess engine trained on millions of human games to play like a real player at your level instead of a perfect robot.

Question 2

How is CaissaLM different from chess.com Game Review or other AI coaches?

Accepted Answer

Most AI coaches are a chatbot wrapped around Stockfish — they hallucinate motifs (telling you about a pin that isn't there) and 'glaze' your moves with empty praise. CaissaLM detects every named tactical pattern from the board state directly and rejects any LLM claim that doesn't match. It also stays silent on small inaccuracies instead of commenting on every move (no 'intrusive whistle').

Question 3

Why is the opponent Maia instead of Stockfish?

Accepted Answer

Stockfish punishes you for not being a computer. Maia is trained on millions of human games at specific rating bands, so a 1200-rated Maia opponent makes the same kinds of mistakes a 1200-rated human makes — and your mistakes are diagnosed against patterns humans actually fall for, not 'you missed Mate in 14'.

Question 4

Is there a free trial?

Accepted Answer

Yes — every new account gets one free game with full AI coaching, and a 7-day free trial of the full subscription with no charge until the trial ends.