Meowdoku Strategy: Check Every Rule Before Placing a Cat

A square can look empty and still be unavailable.

In Meowdoku, each cat affects more than the nearby cells. It also uses up a row, a column, and a colored region. A good move comes from checking those restrictions together, rather than finding a spot that simply looks spacious.

The easiest way to improve is to separate two questions: which squares are ruled out, and which remaining square is forced?

Learn the four checks

In OnlinePuzzle’s Meowdoku, every row, column, and colored region must contain exactly one cat. No two cats may touch, including diagonally.

These rules overlap, but they are not interchangeable.

Two cats far apart in the same row are still invalid. Two cats in different rows and columns can still be invalid if they occupy the same colored region. Two cats in different regions can still be invalid if their squares share a corner.

Before placing a cat, check all four conditions. Then check whether your move leaves a possible home for the cats still missing from other rows, columns, and regions.

Understand what “diagonally” means

The no-touch rule concerns neighboring squares, not an entire diagonal across the board.

For example, cats at row 1, column 1 and row 2, column 2 would touch at a corner. That pair is forbidden.

Cats at row 1, column 1 and row 3, column 3 would not touch. That pair passes the adjacency check, although you would still need to check their regions and the rest of the board.

This distinction prevents unnecessary exclusions. Meowdoku cats do not attack along long diagonals like chess queens.

A distant diagonal square should stay available unless another rule rules it out.

Follow the first level’s chain

The opening 4×4 level starts with a fixed cat at row 1, column 2. Count rows from top to bottom and columns from left to right.

Consider row 2.

Column 2 is unavailable because that column already contains a cat. Columns 1 and 3 are unavailable because both touch the fixed cat diagonally.

Only column 4 remains.

That makes row 2, column 4 the next cat position. The only other square in its colored region is row 1, column 4, which the fixed cat has already ruled out.

Now inspect row 3. Columns 2 and 4 are already occupied elsewhere. Column 3 touches the new cat at row 2, column 4. The remaining position is row 3, column 1.

The last row must then use column 3, the only column without a cat. The completed positions are columns 2, 4, 1, and 3, reading from the top row downward.

Each step follows from a confirmed placement. There is no need to try several arrangements and hope one works.

This small board can be solved largely through rows, columns, and adjacency. Larger boards make the colored regions more important.

Read a region as a group of candidates

Do not assume a region behaves like a square Sudoku box. Follow its actual colored boundary, even when its shape is irregular.

Once a region contains a confirmed cat, its other cells cannot contain another one.

Before it contains a cat, examine where its remaining candidates lie. A particularly useful situation occurs when all of them lie in the same row.

You may not know the cat’s exact square yet, but you do know which row it must occupy. Because that row allows only one cat, cells belonging to other regions in the same row can be excluded.

The same reasoning works for a column.

Keep the conclusion precise. “This region’s cat must be somewhere in this row” does not mean you can choose either candidate freely. It gives you exclusions to use elsewhere while the exact position remains unresolved.

Make every X explainable

An X is a reasoning aid. It does not establish that a square is impossible simply because you marked it.

Before adding one, identify the reason: occupied row, occupied column, occupied region, neighboring cat, or a deduction connecting those rules.

If an unfinished region has no available cells left, pause. Recheck your recent marks and placements instead of adding another guess.

A contradiction can help locate an error, but it does not identify the mistaken move automatically.

You also do not need to mark every unused square to finish. The winning condition is a valid arrangement of cats, not a completely crossed-out board.

Use help to understand the exclusion

The game provides Undo and hints. When a hint offers an explanation through Show Why, read the reasoning before continuing.

Ask which rule removed a candidate and whether that exclusion affects another row or region. One explained move is more useful when you can repeat the reasoning yourself.

Keep a simple solving rhythm

After every confirmed cat, revisit its row, column, region, and immediate neighbors. Then inspect the areas with the fewest remaining options.

This keeps the puzzle manageable as the board grows.

You are looking for a placement supported by the whole board. When the exclusions leave only one possible square, the next cat stops being a guess.