Number Puzzles
Sudoku Hub
Challenge your logic skills with four Sudoku variants. From classic 9×9 grids to complex Killer puzzles.
4
Variants
5
Difficulties
Explore number patterns outside the grid with Number Mystique before loading a fresh puzzle to see digits from a new perspective.
Choose Your Variant
Most Popular
Classic Sudoku
The traditional 9×9 grid. Fill each row, column, and 3×3 box with numbers 1-9.
10-45 min Easy-Evil
Play Classic Math + Logic
Killer Sudoku
Combine Sudoku rules with arithmetic cages. Sum cells within cages to match the target.
15-60 min Medium-Hard
Play Killer BETA
Samurai Sudoku
Five overlapping 9×9 grids forming a massive puzzle. Ultimate challenge for experts.
45-120 min Expert
Preview Samurai BETA
Jigsaw Sudoku
Irregular regions replace the traditional 3×3 boxes. Same rules, new shape.
15-45 min Medium
Preview Jigsaw Difficulty Progression
Start with Easy and work your way up to Evil difficulty!
Beginner
- • Easy (45+ clues)
- • Simple logic only
Intermediate
- • Medium (35-44 clues)
- • Hard (30-34 clues)
Expert
- • Expert (25-29 clues)
- • Evil (17-24 clues)
Features
Educational Hints
Pencil Notes
Unlimited Undo
Auto-Save