Then, move the knight and bishop out of the way, and use your grasshopper royal to jump over the queen. At the same time, you castle since you move 2 squares to the rook, so the pieces will combine. When I tried using at first, it showed rook moves. So when I moved it, the rook moved to the square I selected, thus separating the pieces. But after that, when I clicked on the queen, it couldn't move at all.
So this is how you do it:
Start with a position like this:
(Pawn is there so black won't get stalemated)
Then, move the knight and bishop out of the way, and use your grasshopper royal to jump over the queen. At the same time, you castle since you move 2 squares to the rook, so the pieces will combine. When I tried using at first, it showed rook moves. So when I moved it, the rook moved to the square I selected, thus separating the pieces. But after that, when I clicked on the queen, it couldn't move at all.