Chess piece given time. Except for castling and the knight's move, no piece may jump over another piece . The variety of designs available is broad, from small cosmetic changes to highly abstract representations, to themed designs such as those that emulate the drawings from the works of Lewis Carroll, or modern treatments such as "Star Trek" or "The Simpsons". Themed designs are generally intended for display purposes rather than actual play . Some works of art are designs of chess sets, such as the modernist chess set by chess enthusiast and dadaist Man Ray, that is on display in the Museum
Evolution of the horse horse", "Orohippus" was not a true horse and did not live in the mountains. It resembled "Eohippus" in size, but had a slimmer body, an elongated head, slimmer forelimbs, and longer hind legs, all of which are characteristics of a good jumper. Although "Orohippus" was still pad-footed, the vestigial outer toes of "Eohippus" were not present in "Orohippus"; there were four toes on each fore leg, and three on each hind leg. The most dramatic change between "Eohippus" and "Orohippus" was in the teeth: the first of the premolar teeth were dwarfed, the last premolar shifted in shape and function