  We describe a method for investigating the integrable character of a given
three-point mapping, provided that the mapping has confined singularities. Our
method, dubbed "express", is inspired by a novel approach recently proposed by
R.G. Halburd. While the latter aims at computing the exact degree growth of a
given mapping based on the structure of its singularities, we content ourselves
with obtaining an answer as to whether a given system is integrable or not. We
present several examples illustrating our method as well as its limitations. We
also compare the present method to the full-deautonomisation approach we
recently introduced.
