Supppppppppper short checkmate

Quite short 

why not take bishop when it was on a6?

Well this is a puzzle. So take a look at post 1 and 3.The challenge is to find a move order which leads to a simular position. 

Challenge is to find the shortest move order. There are many possible move orders.

Might be a good idea to mention it in the puzzle.

Sure but the creator of this puzzle is Knightninja8855 not me. 

So it is. Apologies.

Bxa6..................................

I know this mate

Why not? The game has obviously ended.

Whats so surprising in a scholar?

A dinner is the main meal of the day and you commonly have breakfast, lunch, dinner or breakfast, dinner, supper.  This is defined as a supper short checkmate and is thus not as significant as a major checkmate.  I guess a version of scholar's mate suits it.  ... a6 was irrelevant.  ... h6 allows either Qf3 or Qh5 to work, so the moves themselves are not determined (let alone the move order).  ... g6 would force Qf3.  ... Nf6 would force Qh5.  This is a learning attempt at a problem and I am guessing they will get better.

I don't understand what's so exiting about this, half of them are blunders, and the other half are scholers mate.

OK. It's in the opening, but it's still ended. All positions are endgame positions, it's just that some are deeper than others.