Originally posted by BigDoggProblem
I haven't been able to spend a lot of time (yet) on this, but here are a few considerations that others may use to find a solution (or to contradict my observations):
- f7-f6 seems like a good candidate last move to me. Without that, I do not see an easy way back out for the white king
- white is missing two pawns, nothing else. Black's two pawns that have captured didn't take a white pawn. Hence, white promoted two pawns and they got captured. Must be e- and g-pawns
- black has promoted his pawn for a rook (3 rooks). Has to be the g-pawn.
- how did the two g-pawns pass on the g-file? I see two solutions: the white pawn takes something on f7, and then promotes, or the white pawn takes something on the h-file, let's the black pawn pass, and takes something else on the g-file. Since I think the f-pawn moved last in the game, the first option is not available. So, I think both black knights were captured by white's g-pawn (first to the h-file, then back to the g-file)
- still to be analysed: all the other moves, which I believe (hope) are just move order issues (e.g. the white bishops on the a-file).
that's it so far