| ©1990-2005 by Stewart T. Coffin For questions or comments regarding this site, contact the chief metagrobologist:  |
[Home] [Contents] [Figures] [Search] [Help]
[Next Page] [Prev Page] [ Next Chapter] [Prev Chapter]
The family of burr or notched-stick puzzles is a large and prolific one, with offspring numbering in the hundreds or even thousands depending upon how one counts them, and with more being born all the time. This book is not intended to be a compendium of puzzle inventions, past and present. One yardstick for inclusion is the extent to which the underlying idea behind the puzzle is logical and mathematical rather than simply mechanical. Symmetry is an important consideration. In this chapter we will conclude the discussion of square-stick burrs by considering only those having certain kinds of symmetry. This is an appropriate point at which to discuss symmetry.
Symmetry
The Three-Piece Burr Problem
Practical 12-Piece Burrs
The Altekruse Puzzle
Variations of the Altekruse Puzzle
The Pin-Hole Puzzle
The Corner Block Puzzle
A 24-Piece Burr
| ©1990-2005 by Stewart T. Coffin For questions or comments regarding this site, contact the chief metagrobologist: |
[Next Page] [Prev Page] [ Next Chapter] [Prev Chapter]