Curse of Scotland Gurney Benham's book about playing cards, in describing the game of Pope Joan he gives his own explanation for why this card is known as the Curse of Scotland: "The crown of Scotland contained only nine stones, as they never could afford a tenth". Eric Partridge's "Routledge Dictionary of Historical Slang" considers: “the various theories are as interesting as they are unconvincing”. "Collins Encyclopedia of Scotland" says for "Curse of Scotland" "This is usually taken to be the nine of diamonds playing card, though explanations differ". The 19th century Tarot of Marseilles is one of the standard designs for tarot
Ten of diamonds decahedron be stacked together in 3 axes to fill space. The 12 vertex coordinates in a 2-unit cube. (further augmentations on the rhombi can be done with 2 unit translation in "z".) Ten of diamonds decahedron In geometry, the ten-of-diamonds decahedron is a space-filling polyhedron with 10 faces, 2 opposite rhombi with orthogonal major axes, connected by 8 identical isosceles triangle faces. Michael Goldberg references it by the playing card name, "ten-of-diamonds", as a 10-faced polyhedron with two opposite rhombic (diamond-shaped) faces. He catalogued it in a 1982 paper as 10-II, the second in a list of 26 known space-filling decahedra.