id: 06186222
dt: j
an: 2013f.00008
au: Bauch, Hans-Friedrich
ti: The anniversary of the magic hexagon. (Das Jubiläum des magischen
Sechsecks.)
so: Mitt. Dtsch. Math.-Ver. 20, No. 4, 236-240 (2012).
py: 2012
pu: Deutsche Mathematiker-Vereinigung (DMV), Berlin; De Gruyter, Berlin
la: DE
cc: A20 A30 A80
ut: magic hexagons
ci:
li: doi:10.1515/dmvm-2012-0093
ab: The author gives an outline of the history of magic hexagons as well as
magic triangles and magic squares. He reports that the hexagon HC(5),
studied by Ernst von Haselberg in 1887, has a special attribute: It is
the only magic one in the series of centred tessallations of hexagons
obtained by the ring method. The author introduces zero-sum magic
figures which contain numbers from $-n$ to $+n$ for a natural number
$n$, provided that the number of cells is even, and zero is dropped. He
gives several examples which were found by his students as solutions of
exercises. Based on these figures the author creates a new puzzle-game:
Gurami, which is designed similar to a Sudoku. The reader is asked to
solve some guramis. Nice. This is an article of mathematical recreation
in the best tradition of Martin Gardner.
rv: Silke Göbel (Berlin)