Pin (chess) Pin (chess) In chess, a pin is a situation brought on by an attacking piece in which a defending piece cannot move without exposing a more valuable defending piece on its other side to capture by the attacking piece. Moving the attacking piece to bring on the pin is called pinning; the defending piece so restricted is described as pinned. Only pieces that can move an indefinite number of squares in a horizontal, vertical, or diagonal line (i.e. bishops, rooks, and queens) can pin. Kings, knights, and pawns cannot pin. Any piece can be pinned except the king, since the
Horse head mask Horse head mask The horse head mask is a latex mask representing a horse head originally manufactured by novelty purveyor Archie McPhee, and now widely available from other manufacturers. The mask covers the entire head and is typically part of a Halloween costume, or at other times to be funny, shocking, incongruous, or hip, or to disguise one's identity. It has also become an internet meme. The horse mask was originally sold by novelty purveyor Archie McPhee as a Halloween costume since at least 2003. It is marketed under the name "Horse Head Mask" and is made of "realistic brown