Sudoku Classic & Killer

Sudoku Classic & Killer is a free logic number puzzle. The game features two modes: Classic and Killer. In Classic mode, fill the 9×9 grid so that every row, column and 3×3 box contains all digits from 1 to 9. In Killer mode, groups of cells have a target sum, adding an extra layer of challenge. Choose from four difficulty levels: Easy, Medium, Hard or Expert. A new Daily Challenge is available every day. Use notes and hints to solve the toughest puzzles.

How to Play

Choose a mode: Classic or Killer. Tap an empty cell and select a digit from 1 to 9. Each row, column and 3×3 box must contain unique digits. In Killer mode, the digits in each cage must add up to the displayed sum. Use the notes button to pencil in possible candidates. The hint button reveals the correct digit. You have 3 lives — three mistakes and the game is over.

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