George Gruer is a distinguished professor in the Department of Mathematics at the University of Manitoba. Hehas publishedover 200 research publications and 25 books, including General Lattice Theory and Math into LaTex. He is a member of the Canadian Academy of Sciences and an external member of the Hungarian Academy of Sciences.

This puzzle collection is a great assortment of mathematical-logical thought cultivators. It presents novel puzzles interspersed with a handful of classics. These challenging brainteasers will set students on a path of deductive reasoning.—Michael Davis, Mathematics Teacher, November 2012This is a perfectly delightful book which will provide many hours of pleasure to the mathematically inclined child or adult. It would be a nice birthday present, for example.—Norman R. Draper, International Statistical Review, 2012Train Your Brain is an enjoyable way to exercise your brain and spend a few spare minutes during the day. While this collection of math and logic puzzles vary in depth and complexity, they are certainly challenging enough to keep anyone engaged. I found the structure of Grätzer’s book to be particularly appealing. … I really enjoyed solving and attempting to solve the puzzles presented in this book. … most could be solved by anyone from an advanced high school student to a college student with a solid background in mathematics. There is something for everyone in this book.—Janet Shiver, MAA Reviews, February 2012

• The Gym. Black Belt. Hints. Solutions. Appendix. Terminology. Mathematical Induction. Some Important Formulas. Prime Numbers. Prime Factorization. A Friendly Afterword to the Reader. Afterword to the English Translation.

George Gruer is a distinguished professor in the Department of Mathematics at the University of Manitoba. Hehas publishedover 200 research publications and 25 books, including General Lattice Theory and Math into LaTex. He is a member of the Canadian Academy of Sciences and an external member of the Hungarian Academy of Sciences.

This puzzle collection is a great assortment of mathematical-logical thought cultivators. It presents novel puzzles interspersed with a handful of classics. These challenging brainteasers will set students on a path of deductive reasoning.—Michael Davis, Mathematics Teacher, November 2012This is a perfectly delightful book which will provide many hours of pleasure to the mathematically inclined child or adult. It would be a nice birthday present, for example.—Norman R. Draper, International Statistical Review, 2012Train Your Brain is an enjoyable way to exercise your brain and spend a few spare minutes during the day. While this collection of math and logic puzzles vary in depth and complexity, they are certainly challenging enough to keep anyone engaged. I found the structure of Grätzer’s book to be particularly appealing. … I really enjoyed solving and attempting to solve the puzzles presented in this book. … most could be solved by anyone from an advanced high school student to a college student with a solid background in mathematics. There is something for everyone in this book.—Janet Shiver, MAA Reviews, February 2012

• The Gym. Black Belt. Hints. Solutions. Appendix. Terminology. Mathematical Induction. Some Important Formulas. Prime Numbers. Prime Factorization. A Friendly Afterword to the Reader. Afterword to the English Translation.

George Gruer is a distinguished professor in the Department of Mathematics at the University of Manitoba. Hehas publishedover 200 research publications and 25 books, including General Lattice Theory and Math into LaTex. He is a member of the Canadian Academy of Sciences and an external member of the Hungarian Academy of Sciences.

This puzzle collection is a great assortment of mathematical-logical thought cultivators. It presents novel puzzles interspersed with a handful of classics. These challenging brainteasers will set students on a path of deductive reasoning.—Michael Davis, Mathematics Teacher, November 2012This is a perfectly delightful book which will provide many hours of pleasure to the mathematically inclined child or adult. It would be a nice birthday present, for example.—Norman R. Draper, International Statistical Review, 2012Train Your Brain is an enjoyable way to exercise your brain and spend a few spare minutes during the day. While this collection of math and logic puzzles vary in depth and complexity, they are certainly challenging enough to keep anyone engaged. I found the structure of Grätzer’s book to be particularly appealing. … I really enjoyed solving and attempting to solve the puzzles presented in this book. … most could be solved by anyone from an advanced high school student to a college student with a solid background in mathematics. There is something for everyone in this book.—Janet Shiver, MAA Reviews, February 2012

• The Gym. Black Belt. Hints. Solutions. Appendix. Terminology. Mathematical Induction. Some Important Formulas. Prime Numbers. Prime Factorization. A Friendly Afterword to the Reader. Afterword to the English Translation.