Andy Liu & Peter Taylor 
Mathematical Recreations from the Tournament of the Towns [PDF ebook] 

Mathematical Recreations from the Tournament of the Towns contains the complete list of problems and solutions to the International Mathematics Tournament of the Towns from Fall 2007 to Spring 2021.The primary audience for this book is the army of recreational mathematicians united under the banner of Martin Gardner. It should also have great value to students preparing for mathematics competitions and trainers of such students. This book also provides an entry point for students in upper elementary schools. Features Huge recreational value to mathematics enthusiasts Accessible to upper-level high school students Problems classified by topics such as two-player games, weighing problems, mathematical tasks etc.