I will try to clarify the rules. Here is how I used to play the Game,
facing a usual board, with some markers by my side to identify spirits:
When a piece is captured, it becomes virtually a spirit, and shares the
square with the capturing piece. It really becomes effective for attack
when the latter leaves the square, forced or not, and when some normal
friendly piece may reach this square to 'activate' (or as I called it
'invoke') it.
You may indeed put the virtual (still not activated) spirit aside and drop
it later when the square is freed, but I prefer to leave it with some
marker on the same square as the attacking piece.
It happens that you may capture a piece already sharing a square with a
virtual spirit. In that case, the hierarchical rule applies.
Finally, spirits may capture definitly normal ('living') pieces, as
normal Chess, but may not be captured themselves. They may not cross
pieces, nor be crossed by pieces.
I hope I made it plain now for players willing to test the Game.
Don't hesitate to complain in the negative...
When a piece is captured, it becomes virtually a spirit, and shares the square with the capturing piece. It really becomes effective for attack when the latter leaves the square, forced or not, and when some normal friendly piece may reach this square to 'activate' (or as I called it 'invoke') it.
You may indeed put the virtual (still not activated) spirit aside and drop it later when the square is freed, but I prefer to leave it with some marker on the same square as the attacking piece.
It happens that you may capture a piece already sharing a square with a virtual spirit. In that case, the hierarchical rule applies.
Finally, spirits may capture definitly normal ('living') pieces, as normal Chess, but may not be captured themselves. They may not cross pieces, nor be crossed by pieces.
I hope I made it plain now for players willing to test the Game. Don't hesitate to complain in the negative...