Artist Gianni A. Sarcone contributes to an international array of periodicals featuring visual puzzles and math-based brainteasers, including Focus Junior and Rivista Magia (Italy), Brain Games (United States), and Tangente (France). He is also the founder of the award-winning website Archimedes-lab.org, a consulting network of experts specializing in the cultivation of creativity. Marie-Jo Waeber is the cofounder of the Archimedes Lab website and the coauthor of more than a dozen educational textbooks and puzzle books. She also organizes and coordinates workshops and exhibitions involving creativity and puzzle solving.
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