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Over 7 million copies of Dr. Gruber's books have been sold

  CHALLENGE PROBLEMS OF THE MONTH 

Here are unique challenge problems some of which only 5 people in the country were able to solve.  The solution will be presented the following month which will describe powerful strategies to solve the problems and many more.  Thus, the purpose of these problems isn't just to show you an exciting problem, but to teach you how to develop your strategic thinking by understanding the method of solution of the problems.

 

GENIUS CHALLENGE 

INTELLIGENCE CHALLENGE

  • Sidetracks - Five questions to bend your brain. Originally printed in Sacramento Bee.
     

  • July QuickQuiz - Test questions to measure intelligence and creativity. Printed in Hemispheres (United Airlines Magazine).
     

  • September QuickQuiz - Test questions to measure intelligence and creativity. Printed in Hemispheres (United Airlines Magazine).
     

  • October QuickQuiz - Test questions to measure intelligence and creativity. Printed in Hemispheres (United Airlines Magazine).