Killer Sudoku: Sudoku Puzzle is a logic-based number puzzle that combines the classic Sudoku mechanics with advanced constraints and mathematical elements to deliver a deeper brain-training experience. Perfect for both beginners and enthusiasts, this app features multiple difficulty modes, adaptive gameplay, and a range of visual customizations including Dark and Color themes. Whether you’re solving quick 4×4 boards or tackling expert-level 9×9 grids, Killer Sudoku supports focused logic development in a polished, distraction-free interface.
Core Gameplay and Rules
- Fill grid cells with digits (1–9) ensuring no repeats in rows, columns, or 3×3 blocks
- Each outlined cage displays a target sum; the digits placed must total this value
- Players must balance standard Sudoku constraints with additional cage-based math
- Supports grid sizes of 4×4, 6×6 (Casual Mode), and traditional 9×9 boards
Difficulty and Control Features
- Four progressive difficulty levels: Easy, Medium, Hard, and Expert
- Note Mode for temporary pencil marks and logic mapping
- Auto-check option highlights invalid entries in real time
- Undo, hint, and eraser tools available for responsive puzzle solving
- Daily challenges with trophy rewards encourage consistency and improvement
Visual Customization and Accessibility
- Dark Theme designed for low-light conditions and nighttime play
- Color Theme brings a vibrant variation to the standard visual layout
- Clean grid presentation and intuitive tap-to-place input system
- Suitable for both mobile phones and tablets
Additional Tools and Progress Tracking
- Autosave function preserves progress across sessions
- Statistics tracking includes puzzle completions, accuracy, and timing
- Unlimited undo functionality supports trial-and-error approaches
- Social sharing integration via Facebook and Twitter
Frequently Asked Questions
Q: What makes Killer Sudoku different from classic Sudoku?
In addition to standard rules, players must satisfy the target sum constraints within dotted cages.
Q: Are hints and notes available at all difficulty levels?
Yes, all tools are accessible regardless of level selected.
Q: Can I switch to a smaller grid size for casual play?
Yes, 4×4 and 6×6 boards are available under Casual Mode.
Q: Are daily challenges randomized or preset?
Daily challenges vary and provide a new puzzle each day.
Q: Is it suitable for beginners?
Absolutely—Easy mode and note tools provide a great learning curve.
Version History
v3.4.2 —— 9 Apr 2024
Interface Optimization • Visual and navigational improvements applied for smoother puzzle interaction
Bug Fixes • Technical corrections implemented to improve game stability
v2.9.0 —— 4 Oct 2024
UI & Performance Updates • Continued refinement of layout and responsiveness • Stability enhancements rolled out
v2.8.2 —— 22 Mar 2024
Maintenance Release • Minor bug resolutions and interface polish maintained
