22.Cx(-4,0)...B(-9,3)
(image deleted)
If anyone wants to make a move outside of the displayed area, it might be good to also specify something like "attacks Chancellor". Then I or opponent can double-check the move. In strict play, mis-announced moves might be taken as a blunder. But we're good so far.
22.Cx(-4,0)...B(-8,4)
B(-9,3)