This book 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. It should also have great value to students preparing for mathematics competitions and trainers of such students.

Peter Taylor obtained his doctorate in mathematics from the University of Adelaide in 1972. He was an academic at the University of Canberra (UC) for over forty years. In 1976, he was a founder of what was to become the Australian Mathematics Trust (AMT) and served as its Executive Director from 1994 to 2012. He is currently a Professor Emeritus at UC.

Peter had been a member of the Australian Mathematical Olympiad Committee and of the Problem Committee for the Australian Mathematics Competitions. He brought the International Mathematics Tournament of the Towns (IMTT) to western countries in 1988, translating the early problems into English by learning Russian. Under his helm, the AMT published six books covering the first 28 IMTT. He was an author or a co-author for five of them.

Andy Liu obtained his doctorate in mathematics as well as a professional diploma in elementary education in 1976, qualifying him officially to teach from kindergarten to graduate school. He was an academic at his alma mater for over thirty years, where he is currently a Professor Emeritus. During that period, he ran a mathematics circle for students in upper elementary or junior high schools. The members had published over fifty papers in scientific journals.

Andy had served as the deputy leader of the USA team and the leader of the Canadian team in the International Mathematical Olympiad. He had chaired its Problem Committee once and was a member three other times. He had authored or co-authored eighteen books in mathematics, and had been credited as an editor or a co-editor for several others

Part I: Mathematical Recreations. Problems. Answers. Part II: Mathematics Education. Arithmetical Recreations. Geometrical Recreations. Combinatorial Recreations. Solutions. Part III: International Mathematics. Tournament of the Towns. Tournament 29. Tournament 30. Tournament 31. Tournament 32. Tournament 33. Tournament 34. Tournament 35. Tournament 36. Tournament 37. Tournament 38. Tournament 39. Tournament 40. Tournament 41. Tournament 42. Solutions.