Puzzle from recent game....

So I always play 1 min games to practice openings but I've played too many.  Now my blitz and long game is shot.  I constantly miss basic positional moves and tactical motifs.  Today is the second day I have started to play longer games... mostly 1 5 and 3 0 or 5 0 games.  I've been losing a lot but some games are very tactical and very enjoyable.  This puzzle happened to me today.  I slipped up and had an attack on on my king.  Luckily I found the winning move.  White to move mate in two.. or three, I don't know how that works.