Birdduko

Every color patch hides one bird. Your job is to figure out where each one sits. Birddoku is a calm logic puzzle that asks you to place a single bird in every color region. The rules are simple to learn but keep your mind engaged. No two birds can share the same row. No two birds can share the same column. And no two birds can touch each other, not even at a corner. That last rule is what makes every move matter. You cannot rush. You have to look at the whole board and think a few steps ahead. Boards begin at a gentle 4x4 size, perfect for a quick break or a first try. From there they grow to 5x5, 6x6, and all the way up to 9x9. Each size brings a new layer of challenge without ever feeling unfair. NAJOX keeps the experience fresh with new levels that keep coming, so there is always another puzzle waiting when you finish the last one. The pace is slow and steady. There are no timers and no pressure. You can sit with a board for as long as you like, erase a guess, and try again. The colors are soft and the layout is clean, which helps you focus on the logic instead of the clutter. Whether you have five minutes or an hour, Birddoku gives you a quiet place to think. It is a puzzle for anyone who enjoys deduction, patterns, and the satisfaction of finding the one spot where a bird can safely land.

Tap a square once to cross it out. Tap a crossed square again to place a bird. Tap a bird to remove it. Drag across squares to cross out several at once.\nRules: one bird per colour patch, one per row and column, and birds may not touch, even diagonally.\nA wrong bird costs a heart; lose all 3 and the level restarts. Use Hint to reveal a bird and Undo to step back.