Meowdoku is our independent browser puzzle project built around one cat per row, column and colored region. Cats must also stay apart, including diagonally. A fixed starting cat gives each board an immediate set of exclusions, so a useful first step is to trace its line and neighboring squares before placing another cat. Personal X marks and explained hints serve different purposes: a note records what you think, while a deduction needs support from the actual rules and placed cats. If a later region has no legal square, review an optional placement with Undo rather than treating every note as certain. The collection includes five board sizes and a shared daily challenge. This is a project introduction, not an independent player review. The linked game provides the current lessons, levels and controls for trying a small board in your browser.