Nightrider (chess) Nightrider (chess) A nightrider (also known as a knightmare or unicorn, though the latter sometimes also means the bishop+nightrider compound) is a fairy chess piece that can move any number of steps as a knight in the same direction. The nightrider is often represented by a symbol similar to the knight's icon, but altered in a way to indicate the additional straight-line motion. In this article the nightrider is represented with an inverted knight, and notation N (in which case the "knight" is abbreviated as S for German "Springer"). The nightrider was invented by T. R. Dawson in 1925, and
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