Oh, sorry, I should have noticed that might be what you meant. (I always see lower-case as file, and upper-case as pieces but not everyone uses that notation).
None of your guards can capture on d5. Here is Ivan's diagram for the guard (of Waterloo). I know it's not the usual way to specify piece moves. Let me know if you mis-typed your move, or the there is some question about the guard's move.
Sc5