diff --git a/math/ostomachion.tex b/math/ostomachion.tex
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+++ b/math/ostomachion.tex
@@ -0,0 +1,30 @@
+\documentclass{standalone}
+%
+\usepackage{tikz}
+%
+\usepackage{fontspec}
+\setmainfont{Montserrat}
+%
+\title{Squares}
+\begin{document}
+	\begin{tikzpicture}
+		\begin{scope}[scale=2]
+			\draw [color=white,fill=white] (-1,1) rectangle (13,-13);
+			\draw [ultra thick] (0,0) rectangle (12,-12);
+			\draw [ultra thick] (0,0) -- (12,-12);
+			\draw [ultra thick] (0,-12) -- (2,-2);
+			\draw [ultra thick] (6,0) -- (6,-12);
+			\draw [ultra thick] (6,0) -- (12,-12);
+			\draw [ultra thick] (6,-12) -- (9,-6);
+			\draw [ultra thick] (9,-6) -- (12,-6);
+			\draw [ultra thick] (9,-6) -- (12,-4);
+			\draw [ultra thick] (0,-12) -- (6,0);
+			\draw [ultra thick] (3,-6) -- (3,-12);
+			\draw [ultra thick] (2,-8) -- (3,-12);
+		\end{scope}
+		%
+		\begin{scope}[shift={(0,-25.5)}]
+			\node at (12,0) {\textcolor{black}{\fontsize{27}{28}\selectfont Ostomachion (after Suter)}};
+		\end{scope}
+	\end{tikzpicture}
+\end{document}
\ No newline at end of file
diff --git a/math/pdf/ostomachion.pdf b/math/pdf/ostomachion.pdf
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