The following is the source code for post >>>/test/42
>>41
White to move.
\documentclass{article}
\usepackage{skak}
\begin{document}
\newgame
\hidemoves{1.e4 Nc6}
\showboard
\end{document}
btw it looks like you can hide \textbf{1 e4} using \`\hidemoves\` in place of \`\mainline\`.