Chessmaster mistakes

I found 3 mistakes in Josh Waitzkin's tutorials.  The first one is this position.

I don't understand the third pic.  You win a whole queen, but you would not have mate in 4 at that rate.  What am I missing?

You win a whole queen.  You don't mate in four.

Regarding the first 2: is he just trying to teach the simple staircase? He doesn't mention possible quicker ways to #? (Silman presents both the simple #'s and the quicker variations in his end game book)

Yes, I think he is just trying to teach the staircase.

I thought it was called the electric fence.....am i mistaken

There's a lot of ways they call it, I actually call it the "rook roller".

Fair call...

... wow...

Yeah the last pic isn't wrong, if you play what the guy does, you will either have a mate or be a rook and queen up...

In fact I don't get how any of them are mistaken, they all get the mate in the quickest possible way.

Am I missing something?

The moves in chessmaster are in the variations.

So like the second quickest way to mate?

As much as an 11 year old thread for obsolete software can be, I guess.

I doubt it was a mistake, they all demonstrate ladder mates. Betting dollars to donuts they weren’t trying to show fastest mate, but how to walk the rooms down together.

how do you explain this then?