H. G. Muller wrote on Mon, Mar 11, 2019 10:36 AM UTC:
Unfortunately crooked pieces are not yet supported, neither by XBoard nor by the Interactive Diagram. The 'z' modifier is also a bit ill defined (and likewise 'q') when applied to oblique leaps. Three different kind of crooked Nightriders would be possible. One could of course define it such that one always has to take the minimal deflection, as with 'q' for the Rose. For a crooked Nightrider this is not the most-likely choice, though.
Unfortunately crooked pieces are not yet supported, neither by XBoard nor by the Interactive Diagram. The 'z' modifier is also a bit ill defined (and likewise 'q') when applied to oblique leaps. Three different kind of crooked Nightriders would be possible. One could of course define it such that one always has to take the minimal deflection, as with 'q' for the Rose. For a crooked Nightrider this is not the most-likely choice, though.