@Kevin: this is in the case "where the idea is to represent the move". It is feasible to do this, I have made some attempts, but practically if you play SAC chess for example, it is not nice to have so many "knights" on board, the regular ones, those topped by a Rook, those by a Bishop's head, those by a King's head, those by a Queen's crown. Moreover, KN, QN and RN are too much similar-looking I can tell. Of course, those in love with horses will be delighted :=)
@Kevin: this is in the case "where the idea is to represent the move". It is feasible to do this, I have made some attempts, but practically if you play SAC chess for example, it is not nice to have so many "knights" on board, the regular ones, those topped by a Rook, those by a Bishop's head, those by a King's head, those by a Queen's crown. Moreover, KN, QN and RN are too much similar-looking I can tell. Of course, those in love with horses will be delighted :=)