Good problem!
As anselan indicated, it would be a good idea to add the threat line somewhere, for instance after a neutral defense like ..Rb6.
Note that this is still a lot different from the way I proposed in the other twomover topic. Not to say that there is only one right way to do it, but I find the current (standard) format a bit confusing. Of course, none of this is your shortcoming; it's all due to chess.com's poor puzzle interface. Not easy to turn it into something pleasant!
@Arisktotle I thought anselan meant to use a move in reaction to the key threat Qxd4 in this case as the example move.Your saying don't have an example move by black Just show correct and notate all the variations after the key is found.I will try that.I have noticed that some people don't animate the diagram at all,I don' think that it is always because they don't know how,it seems to create more of a discussion about the puzzle which in turn gets more views might be their motive.....Touw Hian Bwee his name drew me to this puzzle he is very good,I guessed that you would have known of him.I had thought it was a made up name like Ua Tane is really John F. Stimson,but no that is his real name.
this was missed.
Morse had this one marked with an * .All of Bwee puzzles had an*.
I was doing better before i tried to fix it.Seems I did confuse it a bit with the double 1st move I did not know how to remove without starting over I tried again on a 3 mover( Bwee in three) check it out.
White in two by Touw Hian Bwee 1974