ABSTRACT
Before describing my jumping card problems, a few words about Martin
Gardner are in order. Martin Gardner is the founding father of the
mathematical recreations world in Argentina. Through his columns and
books (the Canon) we got to know both the classics-like Sam Loyd and
H . E . Dudeney-and the contemporaries. It is because of Gardner that
we Argentinian mathemagicians even got to know one another. Here
is one such example: I n my first letter to Martin I told him that math
puzzlers in Buenos Aires were few and isolated. In his answer he sent me
the name and address of a Federico Fink, a few blocks from my home.