A great mind challenging brain game to improve your memory, mental health and wellbeing.More than 300 puzzles: 112 Very Easy, 112 Easy, and 112 Medium with accurate skill levelsNumber of puzzles per page: 4Solutions 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 printingFree puzzles to try the next 3 difficulty levelsThis is volume No.4 of 4Many more Krazy Carrot Sudoku editions are availableKrazy Carrot: Committed to helping adults and kids improve their brain function. Learn and have fun!