user10380: How are null moves indicated in PGN which Lucas Chess will correctly interpret?
Context: I want to make PGN files of solution lines of series problems, in order to replay them in Lucas Chess. In serieshelpmates, Black plays a series of moves, with no White moves in between, until White checkmates. In other series problems, White plays a series of moves, with no Black moves in between.
Lucas Chess doesn't accept null or -- as valid PGN. (This answer mentioned --.)
I use Lucas Chess because it enables the user to make the app display the board diagram nice and big, with figurines in a font that is nice and clear, and even specify the square colours so that they are nice and unobtrusive. I could try another chess app instead, but I need graphics that are suitable for people whose vision is not 20/20.

user15049: Seems that Lucas chess can not read null moves. is Scid a good enough GUI? You can create null moves there by dragging the king on the opponents king. Download here, or with a Softwaremanager on Linux.

10380: <p>How are null moves indicated in PGN which Lucas Chess will correctly interpret?</p>
<p>Context: I want to make PGN files of solution lines of series problems, in order to replay them in Lucas Chess. In serieshelpmates, Black plays a series of moves, with no White moves in between, until White checkmates. In other series problems, White plays a series of moves, with no Black moves in between.</p>
<p>Lucas Chess doesn't accept <code>null</code> or <code>--</code> as valid PGN. (<a href="https://chess.stackexchange.com/a/21413">This answer</a> mentioned <code>--</code>.)</p>
<p>I use Lucas Chess because it enables the user to make the app display the board diagram nice and big, with figurines in a font that is nice and clear, and even specify the square colours so that they are nice and unobtrusive. I could try another chess app instead, but I need graphics that are suitable for people whose vision is not 20/20.</p>
 15049: <p>Seems that Lucas chess can not read null moves. is <a href="http://scid.sourceforge.net/" rel="nofollow noreferrer">Scid</a> a good enough GUI? You can create null moves there by dragging the king on the opponents king. Download <a href="https://sourceforge.net/projects/scid/files/Scid/Scid%20Latest/" rel="nofollow noreferrer">here</a>, or with a Softwaremanager on Linux.</p>
