Gordon Burgin studied Electrical Engineering at the University of Buffalo, NY, USA. His analytical skills were honed by his career in electronics but in his spare time he followed his keen interest in Maths by teaching Systems Analysis and Mathematics at Junior College level in California. After retirement he volunteered as a Science and Maths Tutor for US DoDDS (Department of Defense Dependents Schools) in a special educational programme (AVID - Advancement Via Individual Determination) which assisted under achieving students reach university entrance level of education. Recognising the benefit of numeric and logic puzzles as a learning aid and educational tool he developed puzzles for both educational and leisure entertainment. They proved to be popular not only with the students but also with their parents, friends and family. In addition to lecturing at schools, he has also supplied puzzles for a variety of international newspapers' and magazines' competition and puzzle pages. This latest puzzle book is designed for those who enjoy the challenge of recreational mathematics. It can also be used as an educational tool or just for your leisure entertainment. His puzzle website www.gordonburgin.com contains a wide selection of numeric and logic puzzles, as well as a monthly Puzzle Challenge.