\documentclass{standalone}
\usepackage{tikz}
\usepackage{shapes}
\begin{document}
\begin{tikzpicture}
\square{red}{(-1,-2)}
\square{red}{(0,-2)}
\square{red}{(1,-2)}
\grid85{(-4,-3)}
\cross{cyan}{(-2,-1)}
\cross{cyan}{(0,0)}
\cross{cyan}{(2,-1)}
\end{tikzpicture}
\end{document}