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2. Pentangle (puzzle supplier) - Wikipedia

   en.wikipedia.org/wiki/Pentangle_(puzzle_supplier)

   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 ...

3. Burr puzzle - Wikipedia

   en.wikipedia.org/wiki/Burr_puzzle

   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 ...

4. Altekruse Puzzle - Wikipedia

   en.wikipedia.org/wiki/Altekruse_Puzzle

   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 ...

5. Mechanical puzzle - Wikipedia

   en.wikipedia.org/wiki/Mechanical_puzzle

   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 ...

6. Artifact Puzzles - Wikipedia

   en.wikipedia.org/wiki/Artifact_Puzzles

   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 ]

7. Off the Grid: Sally breaks down USA TODAY's daily ... - AOL

   www.aol.com/off-grid-sally-breaks-down-060046874...

   For more on USA TODAY’s Crossword Puzzles. USA TODAY’s Daily Crossword Puzzles. Sudoku & Crossword Puzzle Answers. This article originally appeared on USA TODAY: ...