Shortest-proof-game challenge

I’m curious, can anyone make a decent proof game composition (say 10 moves) that looks like a plausible game?

Does it have to have a unique SPG?

Preferably.

#6533

24.5 moves

Well I suppose Endgame can’t complain about a proof game that doesn’t exist.

If it doesn't end in a whole number, yes I can.

You had him at 'black king in check'.

I mean I could just do

but there's probably a million ways to reach that position, and probably even faster than that.

@6541

There are many more transpositions to reach that position, but none faster, e.g.:

Ah right, because all of Black's moves have to come in order.

@6543

Yes, black needs 10 moves in some order.
White can reach its position 1 move faster with Bd3-Bc2, but black is in the lead.

Proof game in 12.5.

A very random position.

A very random proof game in 13.5.

Proof game in 12.5.

#6551

Intended solution:

Cook by the computer: