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"Hopscotch to oblivion", Barcelona, Spain; an example of dark humor. A hopscotch court drawn such that the area where the final step would be is instead a sheer drop such as a building or cliff, such that any participant would fall to their death upon completion, is a motif occasionally seen in fiction, sometimes as a device for black comedy.
Chinese jump rope combines the skills of hopscotch with some of the patterns from the hand-and-string game cat's cradle. The game began in 7th-century China. In the 1960s, children in the Western hemisphere adapted the game. German-speaking children call Chinese jump rope gummitwist and British children call it elastics. The game is typically ...
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Piko is the Philippine variation of the game hopscotch.The players stand behind the edge of a set of boxes (commonly in the shape of a cross or a little girl), and each throws their cue ball. The first to play is determined depending on the players' agreement (e.g. nearest to the markings of the moon, wings or chest).
A Pythagorean tiling Street Musicians at the Door, Jacob Ochtervelt, 1665.As observed by Nelsen [1] the floor tiles in this painting are set in the Pythagorean tiling. A Pythagorean tiling or two squares tessellation is a tiling of a Euclidean plane by squares of two different sizes, in which each square touches four squares of the other size on its four sides.
It is the distance (in inches or millimeters) from the midpoint of the string line to the gauge of the reference rail. The design horizontal alignment for tangent track is zero (perfect straight line on the horizontal layout). The design horizontal alignment on the curved track in North America is 1 inch for each degree of curvature.
Timesaver is a well-known [1] model railroad switching puzzle (U.K. English: shunting puzzle) created by John Allen. [2] It consists of a specific track layout, a set of initial conditions, a defined goal, and rules which must be obeyed while performing the shunting operations.
Inglenook Sidings, created by Alan Wright (1928 - January 2005), is a model railway train shunting puzzle.It consists of a specific track layout, a set of initial conditions, a defined goal, and rules which must be obeyed while performing the shunting operations.