No way! all the three pieces need to be moved to get this position even "a" pawn moves first its not possible to come to this positionwith legal chess moves....U only tell me!:-)..... Wait I forgot about Kings Knight pawn movement! oh I see now I got it yah yah ,,,:-), We dont know about king's movement yah it must have moved lots of squres and is back again well Now I tell u.  ...move ur Kings night pawn, first take out the bishop  far away take out the king and then your queen rt?:-)once queen is out you bring back your king and bishop, move "a" pawn to a3 bring your queen to a2 squre push ur queen knight to c3 bring your queen to b1 push your rook to a2 then queen to a1 and back comes your knight to its place!! right? waw.. its just wonderful take care,,,, at last I got it..:-)

nooooooooooooooo!

to move queen from its place c pawn has to b moved, that means horse can only go to a3, ok now queen need to reach a1 by going to b1 that means horse to move to a3 first then to come back to its original square from same square but rook cant move to a2 unless "a" pawn has moved, if a- pawn is moved then horse cant come back to its original square hence its not possible only, ok?