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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 ...
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 ...
A particular nice presentation of the puzzle appeared in the October 1913 issue of John Martin's Book, here shown to the left. [14] In "Carpentry & mechanics for boys" by A. Hall (1918), figures of an example T and full-size patterns are given for the construction of a wooden version of the puzzle. [15] The arms of the T are longer than usual. [4]
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 ]
The Chinese wood knot, a notorious interlocking puzzle. In this particular version designed by Bill Cutler, five moves are needed before the first piece can be removed. In an interlocking puzzle, one or more pieces hold the rest together, or the pieces are mutually self-sustaining. The aim is to completely disassemble and then reassemble the ...
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