\input{code-page}
\documentclass[border=0.5cm, varwidth=12cm]{standalone}
\usepackage[kernel = lua]{../../latex/pgf-go}


\pgfgoset{profile = pgfgo}


\begin{document}
	\section*{The ko}
	\begin{pgfgolayout}[columns = 3, fit]
		\begin{goban}[5, name = before]
			\stones[b]{B3, C2, C4}
			\stones[w]{C3, D2, D4, E3}
			\mark[triangle]{C3}
		\end{goban}
		\begin{goban}[5, name = capture, captures]
			\stones[b]{B3, C2, C4}
			\stones[w]{C3, D2, D4, E3}
			\moves{D3}
		\end{goban}
		\begin{goban}[5, name = retake, captures]
			\stones[b]{B3, C2, C4}
			\stones[w]{C3, D2, D4, E3}
			\moves{D3, A5, A4, C3}
		\end{goban}
	\end{pgfgolayout}

	\medskip
	Black plays 1 \pgfgoview{capture}{D3} and takes the white stone \pgfgoview{before}{C3}:
	now the shape is \pgfgoview{capture}{B2:E4}. White cannot take back at once, because the
	same position would come again. White plays a threat first, 2 \pgfgoview{retake}{A5},
	Black answers with 3 \pgfgoview{retake}{A4}, and only then White retakes with 4
	\pgfgoview{retake}{C3}: \pgfgoview{retake}{B2:E4}.
\end{document}