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.
Comparison table
| Variant | Grid | Key rule | Difficulty range |
|---|---|---|---|
| Killer Sudoku | 9×9 | Cages with sum totals; no repeats in cages | Medium to evil |
| Mini Sudoku (6×6) | 6×6 | Digits 1–6 with 2×3 boxes | Beginner to medium |
| Samurai Sudoku | Five overlapping 9×9 grids | Five sudokus sharing four corner boxes | Hard to evil |
| Diagonal Sudoku (X-Sudoku) | 9×9 | Both main diagonals also contain 1–9 | Medium to expert |
| Hyper Sudoku | 9×9 | Four extra 3×3 regions also contain 1–9 | Medium to expert |
| Jigsaw Sudoku | 9×9 | Irregular regions replace 3×3 boxes | Medium to evil |
| Sudoku 16×16 | 16×16 | Digits 0–9 + A–F (hex) in 4×4 boxes | Hard to evil |
| Sudoku 12×12 | 12×12 | Digits 1–12 in 3×4 boxes | Hard to evil |
| Even-Odd Sudoku | 9×9 | Shaded cells must hold even digits | Easy to hard |
| Consecutive Sudoku | 9×9 | Markers between cells whose digits differ by 1 | Medium to evil |