One cat per region
Every colored shape must contain exactly one cat, no matter its size or outline.
1/6
Level 1
DifficultyStart from the locked cat.
Meowdoku Game
Play cat Sudoku online, one clever cat at a time.
Meowdoku is a free cat sudoku game you can play directly in your browser. Place one cat in every row, column, and colored region, then make sure no two cats touch—even at a corner. Each of the 150 levels rewards patient deduction with a calm, satisfying finish.
150Puzzle levels
3Difficulty paths
∞Restarts allowed
0Timer pressure
Small rules, bright ideas
Cat Sudoku Basics
What is Meowdoku?
Meowdoku is a free cat sudoku game you play in your browser — a region-based logic puzzle in the same family as Queens and Star Battle, reimagined for cat people. The board is divided into colored regions, and your job is to seat exactly one cat in every row, every column, and every colored region, with one extra twist: no two cats may ever touch, not even diagonally. There is no arithmetic, no trivia, and no guessing required. Every one of the 150 handcrafted levels is solver-verified to have exactly one solution, so you can always reason your way to the answer: read the colored board, mark the seats that are impossible, and let each small elimination reveal the next forced move. A correct placement always follows logically from the row, column, region, or no-touching rule.
One cat per line
Every row and every column must also contain exactly one cat.
No touching cats
Cats cannot share an edge or a corner. Every cat needs a quiet square of its own.
Related Logic Puzzles
Familiar logic, with a different kind of board.
People often call Meowdoku cat Sudoku because both games reward careful elimination. The comparison is useful, but Meowdoku has its own rules and solving rhythm. Understanding the differences makes the first board much easier to read.
Meowdoku and Sudoku
Classic Sudoku asks you to place digits so they do not repeat in rows, columns, and fixed boxes. A cat Sudoku game removes the numbers and replaces the boxes with irregular colored regions. You place only one cat in each row, column, and region, while the extra no-touching rule blocks every neighboring cell around a cat. The shared skill is elimination, not calculation.
Meowdoku and Queens
Meowdoku is even closer to the Queens puzzle family. Both formats combine one piece per row, one per column, one per colored region, and a rule that prevents pieces from touching. The cat theme makes the spatial rule memorable: every cat wants personal space. If you already enjoy Queens-style puzzles, the deduction pattern will feel familiar immediately.
A browser-first cat Sudoku game
This version is designed for instant play on desktop or mobile. There is no download, account requirement, or countdown clock. The complete journey contains 150 unique puzzles across Normal, Hard, and Ultra boards. Your unlocked level is saved in the current browser, so a short break can become one puzzle or a longer solving session.
Controls & Interface
Everything you need is one tap away.
The board is designed to stay out of your way. Mark possibilities, test a deduction, and recover from a wrong turn without losing your flow.
Tap to cycle
A square moves from empty to X to cat, then returns to empty.
Mark impossible squares
Use X marks to keep eliminated seats visible while you reason.
Place a cat
Tap again when a square is the only seat that can work.
Undo a move
Step back through recent moves without resetting the board.
Ask for a hint
Get a gentle clue about the next useful deduction when you feel stuck.
Restart cleanly
Clear the current board and try a new line of thought from the beginning.
How to Play a Cat Sudoku Game
Solve every board in four calm steps.
There is no need to guess. Move from the strongest clue to the next until every cat has one certain seat.
- 1
Scan the colored regions
Start with small or narrow regions. They usually have the fewest possible cat seats.
- 2
Block rows and columns
Once a cat is placed, mark every other square in its row and column with an X.
- 3
Protect personal space
Mark every neighboring square, including the four corners around each cat.
- 4
Confirm the only seat
When a row, column, or region has one open square left, place the cat with confidence.
Solving Techniques
How do you solve Meowdoku puzzles?
The best Meowdoku strategy is not to guess the final pattern — it is to shrink the puzzle one certain step at a time, exactly the way you would solve a Queens or Star Battle board. Start with the smallest colored region, because the fewer seats a region has, the sooner one of them becomes forced. Whenever you confirm a cat, immediately cross out its entire row, its entire column, and every square it touches, including diagonals; whenever you place a useful X, recheck the rows, columns, and regions that square belongs to. The six techniques below — from spotting locked cats to following a chain of consequences — cover every deduction the 150 levels ask of you. Repeat them in a loop after each confirmed cat or elimination, because one small X in the right place is often what unlocks a forced move on the other side of the board.
- 1
Start from the locked cat
A locked cat is a completed clue, not decoration. Cross out the rest of its row, the rest of its column, and all eight neighboring cells. Then inspect every colored region touched by those marks. On early levels, that first wave of eliminations often exposes the next certain seat immediately.
- 2
Count candidates inside each region
Scan the smallest, narrowest, or most heavily blocked colored regions first. Ignore every cell already excluded by another cat, row, column, or neighboring position. If only one legal cell remains, the region forces a cat there. If two remain, keep both visible and see which rows and columns they control together.
- 3
Recheck rows and columns after every move
Players often focus on colors and forget that each row and column also needs exactly one cat. Count the legal cells in every unfinished line. A row with one candidate is solved even when its colored region still looks open. That cat may then remove candidates from several regions at once.
- 4
Use the full eight-cell personal-space rule
A cat blocks the cells above, below, left, and right, plus the four cells touching its corners. Mark all eight whenever they exist. Only immediate neighbors are forbidden: two cats may sit on the same longer diagonal when at least one row and one column separate them. Remembering that distinction prevents false conflicts.
- 5
Watch pairs that share the same lines
Sometimes a region has two possible seats and both lie in the same two rows or columns. You may not know which seat is correct yet, but you do know where that region's cat must affect the board. Use that shared pressure to remove candidates from other regions before choosing either member of the pair.
- 6
Follow consequences instead of guessing
When no single cell looks forced, compare what each remaining candidate would block. A candidate that would leave another row, column, or region with no legal seat cannot be correct. Mark it with an X, then restart your scan from the smallest region. If the chain becomes hard to track, use the gentle hint or undo tools without losing the rest of your work.
150 Puzzle Levels
Three paths, one growing sense of mastery.
The full library grows from quick pattern spotting to layered deductions. Every level is tuned to finish with a clear aha moment.
01Normal
50 levels, 6 by 6Friendly boards teach each rule and reward clean, visible deductions.
Preview levels011842
02Hard
50 levels, 8 by 8Larger regions and tighter interactions ask you to connect several clues.
Preview levels052846
03Ultra
50 levels, 9 by 9Dense boards turn every mark into part of a satisfying final chain.
Preview levels033250
Game Features
Built for focus, not friction.
This cat Sudoku game keeps the useful parts of a modern puzzle experience and leaves the pressure behind.
A full 150 level journey
Move through a carefully paced library with a real finish line.
Progress saved automatically
Come back later and continue from the last level you opened.
Hints that teach
Each hint points toward a useful deduction instead of simply giving away the board.
No timer pressure
Think for as long as you need and enjoy the shape of the solution.
Free to play
Start instantly in your browser with no download and no required account.
Frequently Asked Questions
A few answers before you place the first cat.
The rules are small enough to learn in a minute, but the puzzle has room to keep surprising you.
What are the rules of Meowdoku?
Place exactly one cat in every row, column, and colored region. Cats cannot touch along an edge or at a corner.
Is Meowdoku a cat Sudoku game?
It uses the same spirit of logical elimination, but there are no numbers or arithmetic. You are finding cat positions instead.
How is my progress saved?
Your unlocked level and recent progress are saved automatically in this browser.
Do I need an account?
No. You can open the page and begin playing immediately.
Can I replay a completed level?
Yes. Open the level list whenever you want to revisit a favorite board or improve your solve.
What happens when I use a hint?
The hint system highlights a useful piece of logic so you can keep solving the rest yourself.
Does every Meowdoku level have one solution?
Yes. All 150 puzzles in this browser version have been checked by a solver for exactly one valid answer. The answer obeys the row, column, colored-region, locked-cat, and immediate-neighbor rules at the same time.
Can two cats appear on the same diagonal?
Yes, as long as they are not immediate diagonal neighbors. A cat blocks only the eight cells directly around it. Cats separated by more than one row and one column may appear on the same longer diagonal without breaking the rule.
What should I do when I get stuck?
Return to the locked cats, verify every neighboring X, and count candidates in the smallest regions and tightest rows. Most stalls come from one missed elimination. If the board still feels closed, request a hint for the next useful deduction rather than the complete answer.
Is this the official Meowdoku mobile game?
No. This is an independent browser puzzle experience built around the same cat-placement logic format. It is not affiliated with or endorsed by the original mobile game's publisher. Product names and trademarks belong to their respective owners.
One More Puzzle
Ready for another cat Sudoku board?
Return to the puzzle above, choose your next level, and give Mochi one more perfect seat.
Play Meowdoku