Game Modes
Master different Sudoku variants
Classic Sudoku
Learn how to play Classic Sudoku with standard 9×9 grid rules. Master row, column, and 3×3 box logic to solve any puzzle from easy to expert.
X-Sudoku
Master X-Sudoku rules where both main diagonals must also contain digits 1-9. Learn strategies for this challenging Sudoku variant with extra constraints.
Killer Sudoku
Learn Killer Sudoku combining Sudoku logic with Kakuro-style caged sum constraints. Master cage combinations, the 45 rule, and advanced techniques.
Jigsaw Sudoku
Discover Jigsaw Sudoku with irregular shaped regions replacing standard 3×3 boxes. Learn unique strategies for solving this creative puzzle variant.
Hyper Sudoku
Learn Hyper Sudoku rules with four extra highlighted regions that must contain digits 1-9. Master strategies for this fast-paced Sudoku variant.