'Find the Worst Possible Move' Puzzles

Link to puzzles:

https://www.chess.com/forum/view/more-puzzles/find-the-worst-possible-move-puzzles?page=1#comment-51439828

The solutions to #4 and #7 are not the worst move. For #3, Rg5 works as well. 

Fixed

My favorite was #10. At first glance, it seems that Ra2 is a blunder, but it is actually a great move due to the small tactic Rxa2 Bxd5!

But for #4, worst was Qb5. 

That is no longer a legal move since I moved the queen two squares to the right

But now, Qg3 or Qxh2 can be played! 

Also, for #5, you should put a pawn on h5, so Rg5 is the only move that loses. 

Also, for #9, f3 would work as well. 

Nice ideas! Here is another type of "Worst Move" problem from Tim Krabbe's website. 

What is the worst possible move in this position?

Sampsa Lahtonen (after Dittmann), Tim Krabbe's Website 2008

It seems like every other legal move leads to checkmate

Exactly. All White moves checkmate Black except for one, and the one move that doesn't is the worst possible move.

And it could happen to you tomorrow as it is a legal position!

Theoretically it can. But realistically, it is almost impossible

Uh, all the puzzles are now diagrams...

Yeah all turned to starting position...

It is probably a chess.com glitch. The puzzles are puzzles if you log out

It seems to be a rendering issue

I think it is fixed now. I just copied the puzzles into another comment. chess.com is acting weird.