One per row
Every horizontal line contains exactly one cat.
0 / 6cats placed
Play instantly
Yarn Trail
00:00
1 cat in every row and column1 cat in each color regionCats cannot touch
Tap once for X, twice for a cat.
A calm daily brain break
Free Cat Sudoku Online, made for quiet focus.
Place one cat in each row, column, and colored region. Play instantly with no ads, downloads, or accounts.
Free foreverNo adsWorks on mobile
Four friendly rules01 02 03 04
Learn it in a minute. Keep thinking for much longer.
One per column
Every vertical line also contains exactly one cat.
One per region
Each colored shape gets one cat, no matter its size.
No touching
Cats cannot sit in neighboring cells, including diagonals.
Why this version
A Meowdoku-style logic game built for the browser
Cat Sudoku sits in the same family as region-placement games such as Queens and Meowdoku, but this site is an independent implementation. The board gives you everything needed to reason: colored regions, X marks, conflict feedback, undo, and a measured hint when you are genuinely stuck.
The game never asks for an account and never interrupts a deduction with an ad. Your task is to turn four simple constraints into a complete placement. Each correct cat removes options from a row, a column, a region, and its neighboring cells.
Rules when you are new. Strategy when you are stuck.
Cat Sudoku FAQ
What is Cat Sudoku?
Cat Sudoku is a region logic puzzle. Place exactly one cat in every row, column, and colored region while keeping cats from touching, even diagonally.
Is this the official Meowdoku game?
No. Cat Sudoku Online is an independent browser game inspired by the same region-placement puzzle family. It is not affiliated with the Meowdoku app or its publisher.
Can I play Cat Sudoku for free?
Yes. Every puzzle on this site is free, works directly in a modern browser, and has no advertising, download, or required account.
How do the controls work?
Tap or click an empty cell once to add an X, twice to place a cat, and a third time to clear it. Undo, hint, and restart controls sit below the board.
Does Cat Sudoku have a daily puzzle?
Yes. The daily board changes by UTC date and stays consistent for everyone that day, so you can compare solving paths with friends.
Is Cat Sudoku the same as regular Sudoku?
No numbers are used. Both games reward deduction, but Cat Sudoku uses rows, columns, irregular colored regions, and a no-touching rule.