Help in constructing a proof game

I want to construct a proof game for the following position:

White moved last.
Please help 🙂

Originally posted by David113
I want to construct a proof game for the following position:
[fen]1B6/n1NPpP1p/pPPkrp2/PRppp3/b7/Kp6/Rr1P3P/n1b5[/fen]
White moved last.
Please help 🙂

What about b7-b8=B
or Na8-c7 alt. Na8xc7
or Rb4-b5 alt. Rb4xb5

Is the problem that there is only one possible move...?

There are a few possible last moves. What I need is not the last moves but a complete game score (which of course is not unique). It is probably not very difficult but somehow I always make a mistake and get stuck.
The general structure of the game, without giving many specific moves, will also help.
general structure = which piece captured which, in what order, in what order did the pieces come to their final squares, etc.

Originally posted by David113
I want to construct a proof game for the following position:
[fen]1B6/n1NPpP1p/pPPkrp2/PRppp3/b7/Kp6/Rr1P3P/n1b5[/fen]
White moved last.
Please help 🙂

White captured bQ on the d-file. Black made 4 captures to get the pawn structure [b- and c-pawns cross-capture to get behind wP's, and g- and f- shifted one left each]. This accounts for all captures.

wPg2 is not on the board, and could not have been captured; it must have promoted.

Retraction could run: 1.Rb4 Bb5 2.Ka4 Be2 3.Rg4 Nb5 4.Ra3 Nd4 5.b5 cb6[+R] 7.Rc3 Kc5 8.Rcg3 etc. The 3rd Rook is the promoted g-pawn.

Edit: This is a good enough hint to allow construction of a PG. Giving the whole thing would be a bit tedious. 🙂

Originally posted by SwissGambit
White captured bQ on the d-file. Black made 4 captures to get the pawn structure [b- and c-pawns cross-capture to get behind wP's, and g- and f- shifted one left each]. This accounts for all captures.

wPg2 is not on the board, and could not have been captured; it must have promoted.

Retraction could run: 1.Rb4 Bb5 2.Ka4 Be2 3.Rg4 Nb5 4.Ra3 Nd4 5.b5 ...[text shortened]... od enough hint to allow construction of a PG. Giving the whole thing would be a bit tedious. 🙂

Thanx 🙂