I recently got checkmated in a game I was playing on Live Chess. The last 4 moves seemed like a puzzle to me.

The moves leading up to the position were:

Good one.

easy thnx

There was also 4. ...Bg6#; nice and easy, thanks!

It's acctually a mate in 3.

1. ... Qg1

2. Kf3 Rh1h3+

3.Ke2  Bh5#

or: 3. Kf4 Rh8h4#

The only problem withthe 3 move mate (jugaz) is that white would use his knight to block and thus it would still be four moves.  vaseer's way was nice.  I seen the mate how jugaz described it, but not vaseer's.  I eventually did but it took a couple of minutes.