A Penrose tiling is a non-periodic tiling generated by an aperiodic set of prototiles. Penrose tilings are named after mathematician and physicist Roger Penrose who investigated these sets in the 1970s. The aperiodicity of the Penrose prototiles implies that a shifted copy of a Penrose tiling will never match the original. A Penrose tiling may be constructed so as to exhibit both reflection symmetry and fivefold rotational symmetry, as in the diagram at the right. Penrose tilings were actually discovered by Islamic architects 500 years before Penrose, in the 15th century and were called G...

PanzerBlitz is a tactical-scale board wargame of armoured combat set in the Eastern Front of the Second World War. The game is notable for being the first true board-based tactical-level, commercially available conflict simulation (wargame). It also pioneered concepts such as isomorphic mapboards and open-ended design, in which multiple unit counters were provided from which players could fashion their own free-form combat situations rather than simply replaying pre-structured scenarios. Description PanzerBlitz was designed to simulate a clash between two company, regiment or smaller (n...

A wargame (also war game) is a strategy game that deals with military operations of various types, real or fictional. Wargaming is the hobby dedicated to the play of such games, which can also be called conflict simulations, or consims for short. When used professionally by the military to study warfare, "war game" may refer to a simple theoretical study or a full-scale military exercise. Hobby wargamers have traditionally used "wargame", while the military has generally used "war game"; this is not a hard and fast rule. Although there may be disagreements as to whether a particular...

Titan is a fantasy board game for two to six players, designed by Jason B. McAllister and David A. Trampier. It was first published in 1980 by Gorgonstar, a small company created by the designers. Soon afterward, the rights were licensed to Avalon Hill, which made several minor revisions and published the game for many years. Titan went out of print in 1998, when Avalon Hill was sold and ceased operations. A new edition of Titan, with artwork by [http://www.kmistudio.com/ Kurt Miller] and Mike Doyle and produced by Canadian publisher Valley Games became available in late 2008. The Val...

The Gold lunula (plural: lunulae) is a distinctive type of late Neolithic, Chalcolithic or (most often) early Bronze Age necklace or collar shaped like a crescent moon. They are normally flat and thin, with roundish spatulate terminals that are often twisted to 45 to 90 degrees from the plane of the body. Gold lunulae fall into three distinct groups, termed Classical, Unaccomplished and Provincial by archaeologists. Most have been found in Ireland, but there are moderate numbers in other parts of Europe as well, from Great Britain to areas of the continent fairly near the Atlantic co...