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Burr puzzles. A burr puzzle is an interlocking puzzle consisting of notched sticks, combined to make one three-dimensional, usually symmetrical unit. These puzzles are traditionally made of wood, but versions made of plastic or metal can also be found. Quality burr puzzles are usually precision-made for easy sliding and accurate fitting of the ...
Pentangle's first product was a burr puzzle, the Woodchuck puzzle, whose object was to assemble 24 wooden pieces into an octahedral shape. It sold hundreds of thousands of these. [ 1 ] Pentangle eventually made a total of 314 different burr puzzles, and from 1979 made and sold the "Chinese Cross", a compendium of 42 pieces including all the ...
A holey burr puzzle is characterised by internal holes, which usually allow for sliding movements of individual pieces or groups of pieces. The level of a holey burr puzzle specifies how many sliding movements are necessary to assemble or disassemble the puzzle. Commercial Name: Minus Cube Piece configuration: 2×2×2-1 sliding cubes
Although the puzzle is a disentanglement-type puzzle, it also has mechanical puzzle attributes, and the solution can be derived as a binary mathematical procedure. The Chinese rings are associated with the tale that in the Middle Ages , knights would give these to their wives as a present, so that in their absence they may fill their time.
The Universal Book of Mathematics provides the following information about Altekruse puzzle: [2] [3] A symmetrical 12-piece burr puzzle for which a patent was granted to William Altekruse in 1890. The Altekruse family is of Austrian-German origin and, curiously, the name means "old cross" in German, which has led some authors to incorrectly ...
Liberty Puzzles was founded in 2005 by Christopher Wirth and his business partner Jeffrey Eldridge, after Wirth’s family inherited several hand-cut wooden puzzles from the 1930s. [1] Surprised by the value of hand-cut wooden jigsaw puzzles (which can sell for more than $1,000 each), Wirth decided to start a business using modern cutting ...
Simply Jigsaw. Piece together a new jigsaw puzzle every day, complete with themes that follow the seasons and a super useful edges-only tool. By Masque Publishing
Artifact Puzzles is a manufacturer of wooden jigsaw puzzles operating out of Port Townsend, Washington (previously in Fremont, California). [1] The business was founded in 2009 [ 2 ] by University of Washington electrical engineering professor Maya Gupta, and was originally based in Seattle , Washington . [ 3 ]