H. G. Muller wrote on Fri, Aug 21, 2020 03:37 PM UTC:
And for something completely different:
I had this idea about moving the piece with JavaScript. In HTML-table or ASCII-art mode that would not be a problem. But it seems you have already overlayed the images that are used in JPG/PGN/GIF mode with an individually addressable set of (entirely transparent) empty squares, for the purpose of using their border as highlights. It should be possible to replace these images on the origin and destination square of the first leg by opaque ones of an empty square and a piece. It doesn't really matter if these had a deviating background color compared to the square they cover; this could be seen as a form of highlighting of the first leg, while the normal highlights now indicate possible destinations for the second leg.
And for something completely different:
I had this idea about moving the piece with JavaScript. In HTML-table or ASCII-art mode that would not be a problem. But it seems you have already overlayed the images that are used in JPG/PGN/GIF mode with an individually addressable set of (entirely transparent) empty squares, for the purpose of using their border as highlights. It should be possible to replace these images on the origin and destination square of the first leg by opaque ones of an empty square and a piece. It doesn't really matter if these had a deviating background color compared to the square they cover; this could be seen as a form of highlighting of the first leg, while the normal highlights now indicate possible destinations for the second leg.