Shortest-proof-game challenge

This could definitely be shorter.

56.5

54.5

52.5. I'll let someone else figure out if there's a move or two shorter possible.

Managed to do it in 49.5. I was stuck on 50.5 moves and knew I could optimise it further by one move. It wasn’t easy, but with tight manoeuvres it is possible. I don’t think it can get shorter than this though.

Good work.

I was hoping to get this several moves longer than my previous one, but looks like it's only a half-move more, and that only due to the check.

The "gate" to the area behind the pawns is more "open" in this one, which completely offsets any gains from stuffing more heavy pieces in behind the pawns.

The awkward white Rook permanently shut in behind the pawns worked wonders in the previous one.

#6929