Wow, thanks for the replies!
@Ben2006Tor This is huge load of work! I will have to take some time to look through all of these.
Concerning your composition: this looks very much like you took inspiration from the Mitrofanov study, which is one of my favourites. Cannot begin to grasp the depth of yours, though :D
@Sarg0n This is very neat little composition! Very much like mine I think, at least in spirit. I like yours much better :)
@Dario19503 Not that hard for the absence of too many possible moves, but nice nonetheless. For the sake of minimalism, I think you could leave out the pawns c3 and c4, or am I mistaken?