How can black checkmate white in three moves?

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MaestroDelAjedrez2025
Careful!  Don't stalemate the white king.   
There are several correct answers here.  But, I don't think you should promote your pawn right away.
Congratulations if you can solve this 

CoachBucci

Something like Bishop anywhere from g4-c8 Kh1 Kg3 Kg1 a1=Q/R# does the trick, or after Kh1 a1=Q+ Kh2 Qg1/h8#

pavan12357

Ok