Killer Sudoku 6×6 — Big Brain, Small Grid
Love Killer Sudoku but don't always have time to spare? Meet the 6×6 grid — all the addictive cage-sum puzzling of traditional Killer Sudoku, sized perfectly for the moments you actually have. A full puzzle fits between meetings, errands, appointments, or stops on your commute. Start, solve, feel the satisfying click of completion — all in one sitting.
WHAT IS KILLER SUDOKU?
Fill the 6×6 grid so every row, column, and 2×3 box contains the numbers 1–6. But there's a twist — cells are grouped into cages with a target sum. The numbers in each cage must add up to the target, with no repeated digits. It's Sudoku meets math, and it's wonderfully addictive.
NEW TO KILLER SUDOKU?
No problem. A built-in beginner guide walks you through the rules step by step — from basic Sudoku logic to cage strategies. Start with Beginner difficulty and you'll be solving puzzles in minutes.
QUICK TO START. SATISFYING TO FINISH.
With fewer digits and a smaller grid, each move feels consequential and the path to victory stays visible. Beginners grasp the rules in minutes. Experts chase personal best times. Everyone walks away with that little hit of "I solved it."
5 DIFFICULTY LEVELS + RANDOM
• Beginner — Perfect for learning the ropes
• Easy — A gentle challenge
• Medium — Where the fun really starts
• Hard — For experienced puzzle solvers
• Expert — Only for the brave
• Random — Feeling lucky? Let the app choose
POWERFUL TOOLS
• Pen & Pencil modes with circled candidate marks
• Smart pencil marks — auto-fill candidates or let the app remove impossible ones as you solve
• Built-in calculator with cage-tap integration and running totals
• Cage combinations reference for 2, 3, 4, and 5-cell cages
• Save up to 50 puzzles and resume where you left off
• Full undo & redo history
• Check for mistakes, Reveal when stuck
• Hardware keyboard support on iPad with full shortcut overlay
MAKE IT YOURS
• 6 color themes — Gray, Teal, Blue, Brown, Green, Purple
• Dark mode — follows your system setting or choose manually
• Haptic feedback for a satisfying tactile experience
• Optional timer with best time tracking per difficulty
• Completion stats and personal records
PLAY OFFLINE
Everything runs on your device. No internet required, no ads, no data collection. Your progress saves automatically.
Try 3 free puzzles at each difficulty. Love it? Unlock unlimited play with a single one-time purchase — no subscriptions, ever.
I don’t usually write reviews, but this app forced my hand — in a good way. Imagine if Howard Garns, coffee, productivity, and pure genius had a digital baby — that’s this app. It’s a no-nonsense gem that strips Sudoku down to its addictive core — simple 6x6 grids with clever cage sums, no bloat. Just pure logic puzzles that hook you fast.The interface? Smoother than a dolphin wearing sunglasses. The features? So intuitive my dog could play (and she’s terrible with technology).If you want an app that actually does what it says, looks great while doing it, and maybe even raises your IQ a few points grab this one!
Sudoku newbie
SweetsWinter
As someone who has never played sudoku, I found this game to be fun, exciting and a great way to learn the game! It looks like it will keep me engaged as my skills grow. I can’t wait to see what comes next!
Killer sudoku
deanaleh
A great game. Good instructions. I love the pencil marks. The circles help the numbers stand out a bit. You can even select the color of the board! I'd give 6 out of 5 stars if I could.
Really cool game!
ILUVBASEBA
I had fun playing this even though I was new to playing. It was so easy to understand. 😆
Bug fixes and reliability improvements: fixed free-trial games occasionally being counted more than once during longer sessions; fixed puzzle completion not being detected after Undo; improved purchase restore and saved-data reliability.
Version 1.1.5
The developer, Isaac Matarasso, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Isaac Matarasso
Size
5.6 MB
Category
Puzzle
Compatibility
Requires iOS 17.0 or later.
iPhone Requires iOS 17.0 or later.
iPad Requires iPadOS 17.0 or later.
Mac Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
