  The \textit{$k$-weak-dynamic number} of a graph $G$ is the smallest number of
colors we need to color the vertices of $G$ in such a way that each vertex $v$
of degree $d(v)$ sees at least $\rm{min}\{k,d(v)\}$ colors on its neighborhood.
We use reducible configurations and list coloring of graphs to prove that all
planar graphs have 3-weak-dynamic number at most 6.
