Castling: a safer king and a rook ready to play
Understand when castling is legal, choose a safer side, and avoid moving your king into an attack.
Practise mating patterns and build your skills with guided lessons. Sign in to save progress and earn a puzzle rating.
After a game, open Game Review and choose “Save to personal practice” on a mistake. Your saved positions appear here.
White to move: find checkmate in one.
Understand when castling is legal, choose a safer side, and avoid moving your king into an attack.
Build a repeatable way to notice undefended pieces, discovered attacks, and the opponent's strongest reply.
Use open files, checks from a distance, and active king play instead of defending passively.
Understand promotion choices, check for stalemate, and use the board's promotion picker confidently.
Distinguish a win from a draw by checking the king's safety and every available legal move.
Understand increments, choose a useful pace, and spend your time on the decisions that matter.
Learn how to start a game, develop your pieces, protect your king, and check your moves before committing.
Recognize double attacks, work backward from a knight's targets, and practice a king-and-queen fork on the board.
Distinguish checkmate from stalemate and learn to examine captures, blocks, and king escapes in a queen endgame.
Use a small review routine to learn from bot games: identify a turning point, explain the threat, and choose one improvement.