Well, I think he meant that during your own turn enemy Jokers have no move (so that you can never move into their check), but that whether they deliver check should be judged in the opponent's turn (after he released the piece, but before he pressed the clock, as it were).
Well, I think he meant that during your own turn enemy Jokers have no move (so that you can never move into their check), but that whether they deliver check should be judged in the opponent's turn (after he released the piece, but before he pressed the clock, as it were).