How do you play Sudoku?
Fill a 9×9 grid so every row, column, and 3×3 box contains each digit from 1 to 9 exactly once.
Meistern Sie logische Schlussfolgerungen in einer ruhigen, konzentrierten Umgebung. Lernen Sie die Grundregeln des klassischen Sudoku und erkunden Sie die Herausforderung des Killer-Sudoku.
The board is a 9×9 grid divided into nine 3×3 blocks (regions).
Fill every empty cell with digits 1–9. You start from a partially completed puzzle with one unique solution.
Digits 1–9 cannot repeat in any row, column, or 3×3 block — each must appear exactly once.
Killer Sudoku kombiniert klassisches Sudoku mit Summen im Kakuro-Stil. Ideal für Konzentration und Kopfrechnen.
Lernen Sie die Killer-Sudoku-RegelnFill a 9×9 grid so every row, column, and 3×3 box contains each digit from 1 to 9 exactly once.
Easy Sudoku puzzles start with more given digits and leave fewer cells to solve. Hard puzzles have fewer clues and usually require more advanced deduction.