CatDoku

Play CatDoku unblocked

Looking for a sudoku puzzle you can play at school? CatDoku loads straight in your browser on Physics Shark: free, unblocked and nothing to install. Play it on a school Chromebook, a laptop, a phone or a tablet.

What is CatDoku?

CatDoku is a cozy logic puzzle with cute cats! Place the fluffy heroes on the board following three simple rules: one cat per row and column, one cat per color, and no cats in adjacent cells. Easy rules — but the further you go, the trickier the levels get.

How to play CatDoku

The goal is to place cats on the board so that all three rules are satisfied.

CatDoku Rules:

🐾 1 cat per row and column — exactly one cat in each row and each column.

🐾 1 cat per color — exactly one cat in each colored zone.

🐾 Cats are not adjacent — no two cats can be in neighboring cells, including diagonally.

How to play:

Tap an empty cell to place a cat.

Tap it again to remove it.

Arrange all the cats so that no rule is broken.

Tips:

• Look for rows, columns, and colored zones with the fewest empty cells left — start with those.
• Once you place a cat, mentally cross out its neighboring cells, as well as its entire row, column, and color.
• If you're unsure — use the hint, it will reveal a correct position.

Clear all 100+ levels and become a CatDoku master!

CatDoku FAQ

Is CatDoku free to play?

Yes. CatDoku is free on Physics Shark, with nothing to download and no account to make. The game has optional in-game purchases, but you never need them to play.

Can I play CatDoku unblocked at school?

CatDoku runs in a normal browser tab with no install, so it plays on school Chromebooks and laptops, with nothing to install and no account.

Does CatDoku work on phones and tablets?

Yes. It works with touch controls on phones and tablets, and with a keyboard and mouse on computers.