Queen (chess): also called queen is considered the most powerful piece, being the one that enjoys the greatest mobility. The woman can move in straight lines vertically, horizontally or diagonally by the number of unoccupied squares she finds. The woman is more powerful than a rook, or a bishop, but it is conventionally considered that two rooks together are more powerful than a woman.
King (chess): it is the most important piece and cannot under any circumstances be captured. The king can move one square at a time in any direction. Whenever the king is threatened with a catch, he is said to be "in check" and the defending player is obliged to resolve this situation in the next move. If it cannot be remedied, it is checkmate.