Answer:

castled

AnswerCrossword Clue
CASTLEDMoved to protect the king
CASTLEDMade a crossover move
CASTLEDMade a chess move
CASTLEDTurreted.
CASTLEDMade a certain chess move.
CASTLEDSaved the king, maybe
CASTLEDProtected the king, in a way
CASTLEDMade a two-in-one move, in a way
CASTLEDMoved two chessmen in one turn
CASTLEDMade a switch in a game
CASTLEDMoved the king to safety, in chess
CASTLEDMade a chess maneuver
CASTLEDMade a two-man maneuver