Product Description
There are so-called dissection isomers of Simple Perfect Squared Square (SPSS) dissections. This model resembles a pair of isomers, i.e. two dissections (of order 30) sharing the same elements but in a (very) different arrangement.
The Bouwkamp codes of the two dissections shown are
(201,126,180)(75,51)(48,3)(45,138)(117,159)(93)(83,34)(42,189)(26,8)(18,44,147)(23,21)(16,5)(106)(11,38)(27)(65)
and
(201,159,147)(44,38,65)(117,42)(11,27)(18,21,5)(16)(126,75)(34,8)(26)
(23,106)(83)(51,48,93)(189)(3,45)(180)(138).
See http://www.squaring.net for further explanations.