About Crown Sudoku
Crown Sudoku is a free logic puzzle game for iPhone. Every board is a grid split into colourful patches. Place one crown in every row, every column and every colour patch, and never let two crowns touch, not even at the corners.
Every puzzle is made by the game, has exactly one answer and can be solved by logic alone, so you never have to guess. Start on a small 5×5 board in Easy and work your way up to 10×10 boards in Hard and Extreme, where a single heart is all you get.
- Genre
- Logic puzzle
- Price
- Free, with ads
- Devices
- iPhone
- Requires
- iOS 18 or later
- Modes
- Easy, Normal, Hard, Extreme
- Made by
- ToolJot
How to play Crown Sudoku
Place a crown.Double tap a tile to put a crown on it. Every row, every column and every colour patch needs exactly one crown.
Mark with swords.Tap a tile once to mark it with crossed swords, a note that no crown can go there. Tap it again to clear it.
Keep your hearts.Crowns may never touch, not even at the corners. A crown in the wrong place breaks a heart. Fill the board to solve the puzzle.
Four modes
Easy on a 5×5 board, Normal on 7×7, and Hard and Extreme on 10×10. Extreme gives you just one heart.
Never a guess
Every puzzle has exactly one answer, and the game checks that it can be solved by logic alone.
Hints when you are stuck
A hint places the next crown that logic says must go there. Watch a short video for one, or spend coins.
Coins for every win
Solve a puzzle to earn coins, with more for harder modes and a bonus when you lose no heart.
Crowns and swords to collect
Spend coins on Ice, Ruby, Emerald and Candy crowns, and Ice, Fire, Leaf and Candy swords. Mix any crown with any sword.
Remove Ads, once
One purchase removes the banner and full-screen ads for good, and adds 10,000 coins, 50 hints and the Royal crown and swords.
Questions and answers
Is Crown Sudoku free?
Yes. Crown Sudoku is free to download and play on iPhone, and it is supported by ads. One optional purchase removes them.
How do you play Crown Sudoku?
Place one crown in every row, every column and every colour patch. Two crowns may never touch, not even diagonally. Double tap a tile to place a crown and tap once to mark a tile with swords.
Is Crown Sudoku like a queens puzzle?
Yes. It follows the same rules as a queens logic puzzle, one piece per row, column and colour region with none touching, played with crowns on bright colour patches.
Do I ever have to guess?
No. Every puzzle has exactly one answer and can be solved step by step with logic. If you are stuck, a hint shows the next crown that must go in.
What are the four modes?
Easy uses a 5×5 board, Normal 7×7, and Hard 10×10, each with three hearts. Extreme is a 10×10 board with one heart and no hints.
What happens when I run out of hearts?
You can watch a short video to come back with one heart, once per puzzle. Otherwise a new puzzle starts.
How do hints work?
A hint places the next crown that logic says must go there. You can watch a short video for a free hint, up to two per puzzle, or buy one for 500 coins. Extreme has no hints.
What are coins for?
Coins buy hints and new crown and sword styles. You earn them by solving puzzles, more in harder modes, with a bonus when you lose no heart.
What does Remove Ads give me?
It is a one-time purchase that turns off the banner and the full-screen ads between puzzles, and adds 10,000 coins, 50 hints and the Royal crown and swords. Videos you choose to watch stay available.
Does my progress save?
Yes. Your coins, hints, score and styles are saved on your iPhone automatically.
What devices does Crown Sudoku run on?
iPhone with iOS 18 or later.
How do I get help?
Use Contact support below, or email support@tooljot.com.
Need help?
Questions, bugs or ideas about Crown Sudoku? Send us a message.