GBR and FEN printout

Question

How can I print the GBR-code and the FEN of the current position of \chessboard into the document?

Is this possible for instance for FEN without the transfer from \chessboard to \chessgame with the help of the keys storefen and restorefen and the following command \boardasfen from the skak package?

Up to now I don't know any command to output the GBR-code within the existing chess packages for LaTeX.

Any help would be kindly appreciated!

Answer 1

You can print the FEN with

\documentclass{article}
\usepackage{chessboard}

\begin{document}
\chessboard[setpieces={Ke1,ke8,Ra1},storefen=myfen]

FEN: \csname chessgame.myfen\endcsname

\end{document}

There is no code/command to print the GBR but it is probably possible to build it with the help of the key getpiecelists.