Hindemburg is the founder of the Sigma Society and the Unicorn High IQ Society.
He is also the author of the Sigma Test and the Sigma Test VI, both of which have been translated into many different languages.
He also holds world records in chess, is an author of numerous chess works, and is an instructor and analyst of the game. He is from Brazil.
Honorary Member of the ISI-Society
Founder of the Sigma Society
Founder of the Unicorn High IQ Society
Honorary Member of High IQ for Humanity
Life Member of the International High IQ Society
Honorary Member of the PARS Society