Simply remove the cylinders from their receptacles and
fit (easily, without forcing) all twelve, side by side into
the central tray. Between its creation in July 2003 and
the following December, only five solvers found the intended
solution (or its mirror image), while two others found a
different, unexpected solution.
Choking hazard! This is an expensive puzzle cut to
exacting tolerances. Children leaving teeth marks on the
pieces are apt to be choked.