For today's contribution to PSE, I present a sliding block puzzle! I have a series-helpstalemate in 26 for you all with a relevant question attached. The illegal position is intentional.
Objective #1: Black must make a solo series of moves to reach a position in which White can stalemate them in one move. Black may not give check except for the final move. Find the shortest possible solution!
Objective #2: How many possible solutions exist? Approximations are allowed, as I don't know myself!
Good luck, and have fun!