  2D competitive systems shows a large variety of solid and aggregate patterns,
re-entrant fluid phase, a continuous melting as predicted by the KTHNY theory
and, in some cases, waterlike anomalies. In this paper, we employ Langevin
Dynamics simulations of a ramp-like core-softened fluid that have two
characteristic length scales and all the features mentioned above. Analyzing
the fluid phase of this system, Bordin and Barbosa [Phys. Rev. E 97, 022604
(2018)] reported the existence of two waterlike anomalous region. Now, we
revisit this problem focusing in the low temperature regime and a larger range
of densities looking for a relation between the origin of the anomalous
behavior, the solid phases and the re-entrant melting. Now, not two, but three
anomalous regions were observed. The extra anomalous regions are related to the
re-entrant melting of a amorphous solid to a cluster fluid. They are ruled not
only by the competition between the characteristic length scales in the
potential, but also by extra competitions induced by the variety of particles
conformations. These competitions extends from the solid to the fluid phase,
reflecting in the structural waterlike anomaly. Our results shade some light in
the complex behavior of two length scales competitive potential, and helps to
elucidate the relation between the large number of solid phases and the
existence of more than one waterlike anomalies region in these systems.
