Tutorials
English game screenshots, clear explanations, and walkthroughs from the first tutorial to larger boards.
How to play KozyDoku: your first tap to a finished board
Play the actual 4×4 tutorial. Learn single taps, double taps and exclusions, then find all four koalas with a reason for every move.
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How to use tools: hints and koala locate
Know which help to choose: the bulb explains a deduction, while koala locate supplies a correct placement.
Read the guide →Your first 5×5 puzzle: start with single-square regions
Follow a real easy 5×5 board, using single-square regions, row and column exclusions, and diagonal checks to explain every placement.
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7×7 strategy: two candidates can still give a deduction
A real medium 7×7 puzzle shows how two candidates can lock a region and rule out other squares without guessing.
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9×9 strategy: keep solving when there is no obvious placement
A real hard 9×9 puzzle explains shared conflicts, regions confined to a row, and how exclusions lead to the next certain koala.
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Fixing mistakes: marks, conflicts and another try
Separate marking from placement, undo unsupported exclusions and check rows, columns, regions and diagonals before a move.
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Beginner FAQ: marks, double taps and solving without guesses
Learn the difference between marking and placing, why diagonals count, and what to do when two candidates remain.
Read the guide →From 4×4 to 9×9: how KozyDoku teaches deductions
A look at the actual tutorial and puzzle examples: separate controls from rules, then move from single candidates to shared exclusions.
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