Sudoku Variants
Ten ways to play beyond classic sudoku. Each variant keeps the spirit of the puzzle. fill the grid with logic, no guessing, but bends a rule. Some add new constraints; others change the geometry; some give you extra hints.
Killer Sudoku
9×9 · Medium to evil
Sudoku meets killer-style arithmetic: every dotted region sums to its total.
Mini Sudoku (6×6)
6×6 · Beginner to medium
A shorter sudoku for kids, classrooms, and quick five-minute sessions.
Samurai Sudoku
Five overlapping 9×9 grids · Hard to evil
Five 9×9 sudokus joined at the corners. Solve them as one giant puzzle.
Diagonal Sudoku (X-Sudoku)
9×9 · Medium to expert
Classic sudoku plus a constraint on both main diagonals.
Hyper Sudoku
9×9 · Medium to expert
Classic sudoku with four extra 3×3 regions to satisfy.
Jigsaw Sudoku
9×9 · Medium to evil
Sudoku with non-rectangular regions. same digit constraint, weirder shapes.
Sudoku 16×16
16×16 · Hard to evil
Hexadecimal sudoku for marathon solvers.
Sudoku 12×12
12×12 · Hard to evil
Twelve-digit sudoku for serious solvers.
Even-Odd Sudoku
9×9 · Easy to hard
Classic sudoku with a constraint on which cells hold even or odd digits.
Consecutive Sudoku
9×9 · Medium to evil
Classic sudoku with markers showing which adjacent cells differ by exactly one.