Chessmaster mistakes

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

This one is in part 1 in the Mastery Quiz, page 10.  Josh Waitzkin showed it as mate in 4, but it could be done in 2 moves.
The next one is on that same lesson on page 14.
He showed mate in 5, but it is actually mate in 4.
The third one is page 5 in the "Removing the Defender" lesson.
The correct answer wins a queen for a rook, but you could have won a whole queen.

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?

Romans920 wrote:

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)

Sigmoid_Flexure wrote:

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?

clinttherakam wrote:

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.

jjupiter6 wrote:

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

i mean 11 years old or not: josh is an IM, and josh had access to computers when making h parts of the chessmaster course....sooo...what, the computer josh was using was wrong?

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.

jjupiter6 wrote:

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

how do you explain this then?

TheBaconEater wrote:

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.