Killer Sudoku Free

'Killer-Sudoku Free' - More Than 1,00,00,00,00,00,000 Killer-sudoku puzzles KILLER-SUDOKU PUZZLES NEVER GET REPEATED... A perfect Killer-Sudoku is here for all sudoku lovers with amazing 4 different difficulty options i.e. 'Intermediate','Challenging','Tough' and 'Expert'. Options 1 to 4 varies from very simple, easy to hard and toughest game play. You won’t be looking for a paper puzzle ever again! * 4 difficulty options with 1,00,00,00,00,00,000 Killer-sudoku puzzles * Pencil marks with auto fill / erase * Undo and Redo * Intelligent hints * Selected digit highlighting * Incorrect entry highlighting So get ready to be puzzled... Note - Optional facebook permissions are required just to post your score. We never post without user consent.