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  2. 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 ...

  3. Puzzle book - Wikipedia

    en.wikipedia.org/wiki/Puzzle_book

    Adult puzzle books (wordsearch, crossword, sudoku, brain training) on offer in a store. A puzzle book is a type of activity book which contains a collection of puzzles for the reader to complete. Puzzle books may contain puzzles all of simply one type like (e.g. crosswords, sudoku, or wordsearch) or a mixture of different puzzle types. Puzzle ...

  4. Combination puzzle - Wikipedia

    en.wikipedia.org/wiki/Combination_puzzle

    A combination puzzle, also known as a sequential move puzzle, is a puzzle which consists of a set of pieces which can be manipulated into different combinations by a group of operations. Many such puzzles are mechanical puzzles of polyhedral shape , consisting of multiple layers of pieces along each axis which can rotate independently of each ...

  5. Category:Puzzle books - Wikipedia

    en.wikipedia.org/wiki/Category:Puzzle_books

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more

  6. Yarn - Wikipedia

    en.wikipedia.org/wiki/Yarn

    For a single ply yarn, the direction of the final twist is the same as its original twist. The twist direction of yarn can affect the final properties of the fabric, and combined use of the two twist directions can nullify skewing in knitted fabric. [20] The mechanical integrity of yarn is derived from frictional contacts between its composing ...

  7. Plying - Wikipedia

    en.wikipedia.org/wiki/Plying

    Diagram showing S and Z twist. There are two common ways to ply a balanced yarn: regular and chain plying. Both methods involve the manipulation of "singles"—unplied strands on their own—into multiple-ply yarns by applying twist in the opposite direction than how the single was spun. For example, if in spinning the single the wheel was spinning clockwise (called a "Z" twist, as on any ...

  8. Disentanglement puzzle - Wikipedia

    en.wikipedia.org/wiki/Disentanglement_puzzle

    Wire puzzles, or nail puzzles consist of two or more entangled pieces of more or less stiff wire, metal rods, or bent nails. The pieces may or may not be closed loops. The closed pieces might be simple rings or have more complex shapes. Normally the puzzle must be solved by disentangling the two pieces without bending or cutting the wires. [10]

  9. 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 ...

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