Think clearly with exclusion marks

Mark means “a cat cannot go here.” Tap Mark to change from placing cats to placing crosses. Tap a crossed square again in Mark mode to clear it.

How do you keep Cat Sudoku exclusion marks consistent?

After placing a cat, mark its row, column and neighboring squares. Also rule out the other squares in its region. Notes are manual, so erase any exclusions based on a move you later undo.

Which Cat Sudoku keyboard controls are available?

Use N to toggle Mark, Z to undo, and Delete or Backspace to clear the selected square. Every square and control is also accessible with Tab and Enter.

Return to sudoku without ads.