Futoshiki Puzzle Book for Adults: 192 Japanese Math Logic Puzzles | Easy to Hard: Publishing, Puzzle King: 9798676190057: Amazon.com: Books,Futoshiki Puzzle Book for Adults: 192 Japanese Math Logic Puzzles | Easy to Hard: Publishing, Puzzle King: 9798676190057: Amazon.com: Books,adidas ZX 9000 '30 Years of Torsion' FU8403,Futoshiki Puzzle Book for Adults: 192 Japanese Math Logic Puzzles | Easy to Hard: Publishing, Puzzle King: 9798676190057: Amazon.com: Books,adidas ZX 9000 '30 Years of Torsion' FU8403