Shortest-proof-game challenge

#739
Shortened

That's very good. I hope YidingL1  will give you some trophies. How did you do on #714? Do you want to see my 17-move game?

#728

Shortened and with rook on c8

That's so good. I can't wait to see what you'll do with #570.

#714
I found another 0.5 move short.

interesting position-

try-

21 moves.

nice idea

but i cant seem to beat 20 (also half moves are irrelevant in positions like this ending in checkmate

#749
Here in 17 moves

i missed that

1-up moment!

now someone try to 1-up me by putting something on d1 lol

black to move

possible in 9.5 moves

white to move

thats so well known

possible in 11 moves

this too

At #681, NirKrish posted this position and said "I know the shortest possible answer to this question can anyone find it". At #686, tygxc posted a 16.5 move proof game. NirKrish didn't reply, and there were no more posts on the position. Here is a 16.0 move proof game. I wonder if it agrees with NirKrish's shortest possible answer.

@NirKrish is now @NirbhKrish