'A Study Game with Seven Different Nightriders in It' by Jörg Knappen. The Rose is nightrider number 2. I get nervous around a piece that can make a null move (all the way around the circle back to its starting square) and also can require as many as four(!!!!) pieces to block a check. So I much prefer the Half-Rose, a circular nightrider making from one to four leaps. The Half-Rose has the same movement diagram as the Rose, but without the redundant move capability. My 2004-09-02 Comment on the Piececlopedia page for the Rose has more to say about the half-Rose.
'A Study Game with Seven Different Nightriders in It' by Jörg Knappen. The Rose is nightrider number 2. I get nervous around a piece that can make a null move (all the way around the circle back to its starting square) and also can require as many as four(!!!!) pieces to block a check. So I much prefer the Half-Rose, a circular nightrider making from one to four leaps. The Half-Rose has the same movement diagram as the Rose, but without the redundant move capability. My 2004-09-02 Comment on the Piececlopedia page for the Rose has more to say about the half-Rose.