Uranomachia aka The Astrologer's Game or is a boardgame in which each of the two players take turns moving their seven pieces (representing the Sun, Moon, and planets) on a circular board, representing the heavens and constellations of the zodiac. Players move their pieces in accordance with Ptolemy's astronomy. The goal of the game is the capture of the opposing players Sun piece. The game was used in universities during the 15th and 16th centuries as teaching aid, in order for students to better grasp the concepts of Ptolemaic astronomy, as well as astrological concepts.