Sudoku With Over 500 Puzzles: Sudoku with Answers at the Back – Hard, Very Hard and Extreme Levels – For Adults - Volume 2 (Sudoku with Over 500 ... from Very Easy to Extreme - 6 Volumes)

A great mind challenging brain game to improve your memory, mental health and wellbeing.More than 500 puzzles: 180 Hard, 180 Very Hard and 180 Extreme with accurate skill levelsNumber of puzzles per page: 6Solutions are at the endBig 8.5" x 11" pages with room to workWide margins to remove pages easilyUnique and exclusive content - not repeated elsewhereHigh quality paper and printingThis is volume No.2 of 3Krazy Carrot: Committed to helping adults and kids improve their brain function. Learn and have fun!