How can I ensure that my king is safe from being captured in a game of chess by moving it to a castle out of check?

To ensure your king is safe from being captured in Chess, move it to a castle (also known as castling) out of check. Castling involves moving the king two squares towards a rook on the player's first rank, then moving the rook to the square over which the king crossed. This move helps protect the king and can also bring the rook into play.