Pinning for Mate

I mentioned how powerful the pin is in so many situations, but I think this is the first time is has occurred with mate following in one of my games.

Its a blitz/10-minute game, but still a first for me.

Not so strangely, the initial reaction was Qxg5, since the bishop is hidden on a2, but the practise of suppressing the automatic reaction pays off, and the winning move of Qxg6 was played. 

Luckily my opponent made it easy with a reply of Kf8.

White to play, Mate