The intelligent number puzzle Killer Sudoku Grandmaster invites you to conquer the heights of mathematical logic on any convenient device. Choose a suitable challenge among ten levels of difficulty, make intermediate marks in the cells and calculate the total values of the selected blocks according to strict classical canons. Use rare life-saving hints in dead-end situations, control the count of permissible misses and achieve the standard filling of the entire numerical grid. Prove your status as a true grandmaster with impeccable mental deduction and earn game points in Killer Sudoku Grandmaster.