Deductive Puzzle #37

Sorry, been very busy the past week or two so haven't been able to post these recently. 

Anyways,  White's Queen bishop is invisible. We only know that it wasn't captured on its own square. Where is it now, or where was it captured?

Ok, black's bishop on a2 must be promoted.

Let's assume it wasn't. That means it must have escaped through d7. Also, b3 must have been played AFTER the bishop got there. However, that means w q-side bishop and queen couldn't have escaped, but the only piece the d pawn could have captured was the queen. Therefore we know the bishop was promoted.

So the bishop was promoted on b1. This required 3 captures, and there are 3 missing white pieces. (Both bishops and the queen) This means the queen side bishop must have been captued by the pawn. As far as I can tell, the only 3 squares it could have been captured on were b6, a3, or b2.

That was my deduction as well initially, but White's Kingside Bishop can't have been captured by the pawn (it's stuck on f1). I don't get it. Let me think...

It only required 1 capture! The white pawn was on a2 when the black pawn promoted. Therefore the white queenside bishop was captured on b2

Ah! Well done.

Easy, got it first try.... (just kidding)

I love these, but they are a little out of my league. Well done to the guys that solve trhem.....

very clever, took me a while to understand that the queen has to escape FIRST before Black's white squared bishop could escape (Queen captured by pawn on c6). Well done =)