\documentclass{article}
\usepackage{tikz}
\newlength{\boardSquare}
\setlength{\boardSquare}{6mm}

\begin{document}
\begin{tikzpicture}

% grid
\draw[step=\boardSquare,gray,very thin] (0,0) grid (18\boardSquare,18\boardSquare);
\draw (0,0) rectangle (18\boardSquare,18\boardSquare);

% stars
{% for y in [3,9,15] %}
	{% for x in [3,9,15] %}
		\filldraw[fill=black] ({{x}}\boardSquare,{{y}}\boardSquare) circle[radius=0.04];
	{% endfor %}
{% endfor %}

% stones
{% for p in stones %}
	\filldraw[draw=black,fill={{stone_color(p.color)}}] ({{p.x}}\boardSquare,{{p.y}}\boardSquare) circle[radius=0.5\boardSquare];
{% endfor %}

% moves
{% for p in moves -%}
	\filldraw[draw=black,fill={{stone_color(p.color)}}] ({{p.x}}\boardSquare,{{p.y}}\boardSquare) circle[radius=0.5\boardSquare] node[color={{label_color(p.color)}}]{{ '{'+p.label|string+'}' }};
{% endfor %}

% labels
{% for p in labels -%}
	{{labeledPoint(p)}}
{% endfor %}

\end{tikzpicture}
\end{document}