CatDoku online
A free CatDoku board with a rules card under the player. One cat per row, column, and zone; diagonals count. Tap place/remove, then work the 100+ level ladder.
Free to play in your browser - no download or sign-up.
How to play CatDoku
CatDoku belongs to the same family as Meowdoku: place one figure in every marked area - a color block on the region boards, a box on the sudoku-style ones - with no two figures sharing a row or a column. Several of these boards also forbid touching, even diagonally. Those constraints are what make the grid solvable by deduction alone: you never have to guess, only to find the area that is already decided.
Start with the tightest area
Ignore the crowded middle of the grid. Find the marked area with the fewest usable squares left and work outwards from there - an area down to two candidates usually settles the line it sits in as well.
Bank the forced placements
An area with one open square, or a row with one open square, is a free placement. Take every one of them before you start reasoning, because each figure you bank removes a whole line of candidates.
Mark before you place
Most of these boards let you cross squares out. A wrong mark costs you nothing; a wrong placement usually costs a heart or a life. When you are not certain, mark the square and keep going.
Check the control card
Each portal shows its own control scheme under the board - usually tap to cross out and double-tap to place. Read it once before your first move and you will not lose a heart to a mis-tap.
CatDoku is published by its own developer and embedded here from playgama.com. It is not affiliated with Meowdoku or with this guide site; the rules card inside the player is the authoritative version for this board.
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