A small glider in TikZ...

```

\documentclass{standalone}

\usepackage{tikz}

\usetikzlibrary{backgrounds}

\begin{document}

\begin{tikzpicture}[background rectangle/.style={fill=white}, inner frame sep=0, show background rectangle]

\foreach \pos in {(1,1), (2,1), (2,2), (3,2), (1,3)} {

\fill \pos rectangle +(1,1);

}

\draw[color=white, ultra thick] (0.5, 0.5) grid (4.5, 4.5);

\end{tikzpicture}

\end{document}

```

#tikz #gameoflife