This volume explores the treatise Giuochi mathematici, which is only the second known collection of mathematical riddles written in Italian. This treatise was written by Piero d'Antonio di Nicolao da Filicaia between 1515 and 1516, but was not published at the time. It offers a fascinating glimpse into the minds of the people of the Renaissance and is a valuable resource for historians of mathematics and enthusiasts of Florentine Renaissance culture. This edition, based on the two extant manuscripts of this work, brings this intriguing text to light for the first time and allows you to explore the rich tradition of mathematical riddles.