Tactics for Beginners : Overload

From one of my games (analysis, it was actually Black's move in the game):

Fun puzzle, nice Queen sac and bishop mate  

Hammer you should not tell the solution up front.............!!!

We know that you know, but we want to find out by ourselfes  

I didnt say the solution, nor where the sac is...it could be the first move for all you know  

The final moves of that same game also formed an interesting tactic... a cross-pin.

wow, that is really difficult!!!! not sure I would find in a match

Nice one!! 

Me neither, I would never find that in a game! 

Here's the whole game:

You must be really really clever, seeing this combination!!!

I used to teach tactics, at chess clubs around the Canadian Maritime provinces.

EDIT: which doesn't rule out the possibility that I'm really really clever, of course.

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Thankx blueemu for this wonderful post. Its great help for beginners like me.