Ken Russell & Philip Carter 
Discover Your IQ Potential: Over 500 Tests of Your Mental Agility [EPUB ebook] 
Over 500 Tests of Your Mental Agility

Do you see yourself as a bit of an IQ wizard? Do you want to stretch your mental powers even further? Then this book is for you! Containing hundreds of logic puzzles, mind-benders, mathematical teasers and conundrums, Discover Your IQ Potential is the perfect way to challenge your IQ skills. Compiled by two of MENSA’s leading puzzle editors, this collection of 500 puzzles is a must-have for all those serious about using their grey matter to its full potential. So get started, work your way through and watch with amazement as your IQ soars to exceptional heights!