The concept is the same as in the other "Chess exam" books. 60 positions must be evaluated and from up to 4 candidate moves the strongest needs to be selected.
What makes the book interesting is that you play against Bobby Fischer. The full games are given at the end of the book and can be studied (and enjoyed) at a later time. The author puts more focus on the right evaluation of a position. If you picked the right move but thought that the game is only equal, you often get no points. On the other hand, if you picked the drawing (instead of the winning) move and evaluated the position as drawn, you will get at least a couple of points. The positions are from important tournaments but also from simuls where Fischer made mistakes.
Very useful is the break down of the position in the solution part. This teaches you how to think right and how to find candidate moves. Many players are good at calculation but this skill cannot be utilized fully if the interesting moves are missed and not calculated at all.
After taking the test, ratings are provided for different areas to identify what needs to be improved first to become a stronger chess player. The overall rating was much too high for me. Just 6 months ago I scored 1450 in the first book and now it was 1980?! The actual number is of course not so important, it was more important to find the weak areas. There is much to do in the next months...
I liked the first book a little bit more but this one also deserves my recommendation.