Rules
What does illegal move mean in chess?
- Rules
- Legality
- Result
An illegal move is a move that breaks the rules of chess. In tournament play it can carry penalties, so always resolve legality before continuing.
Illegal move FAQ
What does illegal move mean in chess?
An illegal move is a move that breaks the rules of chess. In tournament play it can carry penalties, so always resolve legality before continuing.
Put your own games under review
Knowing the vocabulary is the easy part. Chessiro's free chess game review runs Stockfish 19 over your Chess.com and Lichess games, marks the moves that cost you, and explains each one in plain English. Or paste any game into the PGN analyzer, including famous games from the classic games collection.
Free game review
Find the moment each of your games turned
Chessiro reviews your games with an AI coach that names the concept behind every mistake, then drills you on the exact positions where it happened until you stop repeating them.
