Puzzle I Created: Who Can Solve It?

Hey folks- here's a puzzle I just created recently:

The goal is to reach the position below in exactly EIGHT moves, with it being white to move by the time this exact position is on the board.

It's not a very difficult puzzle, but it's interesting. Here's the position:



Who can type the solution? The prize is a sense of accomplishment.

1. Nc3 a5 2. Nd5 a4 3. Nxe7 a3 4. Nf3 axb2 5. Nxc8 b1=B 6. Ne7 Bxc2 7. h3 Bf5 8. h4 Bxe7

This type of problem is called a proof game.
The solution is not unique, which is usually considered a fault. (For instance you can change the order of Ne7xc8-e7, Nf3 and h3-h4, or of ...Bxe7 and ...Bf5.)

For instance, a unique one is this (I composed this 3 years ago): reach the position after white's 7th move.
rnBqkBnr/p1p2p1p/3p4/6p1/6P1/1P6/P1PPPP1P/RNbQKbNR b - - 0 1

@Illion Wow...That was quick. Yeah I know it's not an original idea- I saw it in some other chess books- I just thought it would be interesting but I guess it's pretty well known :P

Quick - well, let's just say I had the good fortune to find the post immediately after you posted. :P

It's a nice idea you had, but the giveaway was the light bishop out while pawns are on b7 and d7. What you're attempting is a phoenix/prenix bishop - where the bishop on the board is promoted after (or before) the original is captured. It's possible to achieve that without it seeming too obvious.

For an introduction to the genre, see this pdf: http://abrobecker.free.fr/chess/IntroductionToPGs.pdf
Problem 22 there might be of interest.

@Illion I'm trying to solve the puzzle you mentioned in your first comment- it's tough! :) You sure it's 7th move? Here's where I stand on it:

- We can rule out pawn promotions for black since there is nothing to capture on the way. This means any black pawns that are removed must to have been captured by white bishops.
-The b7 pawn is gone so that means white had to capture it with a bishop, so the route for white's light bishop would be Bf1-g2-b7-c8.
-The only opening for black to get into f1 is from g2/h3, and two bishops can't use the same entry/exit route, so the route for black's bishop is Bc8-h3-f1.

-So far, with the bishop routes and all visible pawn moves g4, b3, d6 and g5 combined, white has used 5 moves and black has used 4. This means both sides can only take 2 more moves each before white plays his 7th move.

- The only 2 move route for white's bishop is Bc1-a3-f8.
- Black's dark square bishop can't interpose with white's route, and there's no other 2 move route for black :( The closest black has is a 3 move route Bf8-g7-b2-c1. If the puzzle were to be solved on black's 7th move, we could fit all our previous moves together and solve it...If not for the fact that in the solved position, black's e-pawn is gone which completely turns it around :(

It's a very well-crafted puzzle, much better than mine- I'll try working at yours for a little longer :)
Maybe it has something to do with my misunderstanding that "two bishops can't use the same entry/exit route"...

Oh my goodness, I misread my own stipulation "PG 7.5". It's after white's 8th move. Sorry about that. You might have already got it if not.