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The new edition of one of the most successful and challenging puzzlebooks ever, compiled by the former Honorary President of International MENSA This collection was compiled by Victor Serebriakov, one of the world's great puzzlemasters. He devoted over 40 years of his life to building up the society of the most agile minds from all over the world, organising the severest IQ tests for many millions of MENSA applicants. Victor says in his opening chapter, 'In the matter of puzzles, I confess I am a sadist.' Here is the chance to pit your wits against his, with his most enjoyably sadistic collection. It is absolutely Not just a collection of assorted puzzles. It is a structured and graded obstacle course of quite fiendish difficulty. To make the task even worse there is a time allowance for each puzzle and you cannot rely entirely on genetic advantage - you have to fill in the IQ test before you start, and if you do well you will find yourself handicapped Sounds awful, but think of the pleasure when you get them right... This best-ever compilation of puzzles is now back by popular demand.