Award-Winning Collection of Thoughtful Consulting Cases

“I was very impressed by the excellent scenarios and development of the cases” — Reader’s Favorite

Global Ebook Awards Winner

International Book Awards Finalist

Book Excellence Awards Finalist

Foreword Indies Book of the Year Awards Finalist

National Indie Excellence Awards Finalist

San Francisco Book Festival Honorable Mention

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Discover Exclusive Features

designed to sharpen your case interview skills


Every Case Master case stages one trendy business concept in action that you first grasp intuitively and then study in a detailed debrief.


Every Case Master case challenges your problem-structuring by exploiting a blindspot in your mind’s eye, inciting you to put to work both your critical thinking and business creativity.


Every Case Master case incorporating guesstimation provides you both the freedom to make any reasonable estimate and the interactive challenge of a contingent outcome.


Every Case Master case can be easily given both as intermediate or advanced due to its modular structure, providing a rewarding experience for both beginners and experts.


Every Case Master case provides a structured presentation of case data, based on universal business categories, to facilitate partner practicing.


Every Case Master case is a story told through numbers that are designed to embody the business challenge and practice mental math.


Every Case Master case draws upon rich contextual data, encouraging you to explore different directions, master efficient questioning, and embrace the data-driven analysis.


Every Case Master case goes several layers deep, challenging you to adapt your problem-solving approach and apply in-depth analysis to define the client’s true problem.

Navigate the Business Coordinates

to master new trendy business concepts

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Join Case Master Club online

to find ratings for popular cases and other content

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About the Authors

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Valentin Nugmanov is a multilingual strategy consultant with extensive international experience across five countries.


He holds a doctorate in Management Science and a Specialist degree in Advertising from Moscow Polytechnic University, as well as several Master’s degrees.​

These include a Master’s in Urban Studies, funded by the EU’s Erasmus Mundus Scholarship, from the University of Genoa and the University of Seville, a Master’s in Innovation Management from Paris-Dauphine University and Mines ParisTech, and a Master’s in Sociology from the School of Advanced Studies in the Social Sciences and Moscow State University.

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Ronald Clouse.jpg

Ronald Clouse is an Associate with the global consulting firm Booz Allen Hamilton in Washington, DC.


He received his doctorate from Harvard University in biology and worked for several years during the dot-com boom at the investment bank D.E. Shaw & Co. in New York City.

He also has a Master of Science degree in animal behavior from the University of Florida and a Bachelor’s degree in area studies from Duke University.


He has worked at Union Bank of Switzerland and the American Museum of Natural History, and he has published dozens of scientific articles in computational biology, DNA analysis, and evolution.

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