  The fluidic pinball has been recently proposed as an attractive and effective
flow configuration for exploring machine learning fluid flow control. In this
contribution, we focus on the route to chaos in this system without actuation,
as the Reynolds number is smoothly increased. It was found to be of the
Newhouse-Ruelle-Takens kind, with a secondary pitchfork bifurcation that breaks
the symmetry of the mean flow field on the route to quasi-periodicity.
