LLD - Design — Chess GameIn a chess game implementation, which piece's movement history must be tracked to determine castling eligibility?AOnly the kingBBoth the king and the rook involved in castlingCOnly the rookDAny piece on the back rankCheck Answer
Step-by-Step SolutionSolution:Step 1: Understand castling rulesCastling requires that neither the king nor the rook involved has moved previously.Step 2: Identify pieces to trackBoth the king and the specific rook must have no prior moves to allow castling.Final Answer:Both the king and the rook involved in castling -> Option BQuick Check:Tracking only one piece is insufficient for castling validation. [OK]Quick Trick: Track both king and rook moves for castling [OK]Common Mistakes:MISTAKESTracking only the king's movementIgnoring rook movement historyAssuming any rook can castle regardless of movement
Master "Design — Chess Game" in LLD9 interactive learning modes - each teaches the same concept differentlyLearnWhyDeepArchTryChallengeDesignRecallScale
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