What is the Burr Puzzle?
The burr puzzle is a 3dimensional
puzzle.
The simpliest one has two
pieces in form of a C and one piece in form of an O.
You have to fit them together, so that you have a "knot".

Solution:
Burr Puzzles
of Six Pieces
top
The standard burr has 6 pieces.
Solution:
A Burr
Puzzle with an Empty Space top
The following sixpieces burr puzzle is simpler. But
it has one "mistake": There is an empty space inside.
Solution:
Building
of the Burr Puzzle top
... 
If you would like to make the knot with three pieces
you need three blocks of wood with the measurements 8cm x 6cm x 2cm. The
holes in the middle have the measurements 6cm x 2cm x 2cm.
The drawing on the left with the cubelets will
help you. 
.... 
You need 6 blocks of wood 6cm x 2cm x 2cm for the knot
with six pieces. 
Volume
of the 6piece Burr Puzzle top
The burr puzzle is built of cubelets. You have to count
them.
Result: 104 cubelets form the burr.
References
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(1) Pieter van Delft /Jack Botermans: Denkspiele der
Welt, München 1980 (1998 neu aufgelegt)
(2) ComputerKurzweil, Spektrum der Wissenschaft, Dezember
1985
(3) Jerry Slocum/Jack Botermans: Geduldsspiele der Welt,
Augsburg 2005 [ISBN 3828949495]
Burr Puzzle
on the Internet top
German
Peter Rösler
Holzpuzzles
Wikipedia
Mechanische
Geduldspiele
Englisch
ISHINO Keiichiro
Puzzle will
be played...
6
Piece Burr, Burrs
Catalogue
Bill Cutler Puzzles, Inc.
Puzzles
(SixPiece
Burrs, Rectilinear
Burrs, NonRectilinear
Burrs)
IBM Research
Burr
Puzzles
Rob's Puzzle Page
Interlocking
Puzzles
Stewart T. Coffin
Larger
(and Smaller) Burrs
Sue & Brian Young
Mr Puzzle Australia
Wikipedia
Burr
puzzle, Mechanical
puzzle
woodgears.ca
12
piece burr puzzle (12 identical pieces)
Comments top
The American puzzle designer Bill Cutler found out with
the help of a computer, that you can build the burr puzzles with a stock
of 25 pieces in 341 ways (2).
The Dutch professor J.H. de Broer has systematically designed
500 pieces 6x2x2 and put them together as a burr. He found 69 versions
of this take apart puzzle (1).
Then mathematicians found with the help of a computer,
that you can build burr puzzles with a stock of 369 pieces in 119 979 ways
(3).
Feedback: Email address on my main page
This
page is also available in German.
URL of
my Homepage:
http://www.mathematischebasteleien.de/
©
1999 Jürgen Köller
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