A daily logic puzzle set on a coral reef. Octopuses are territorial, so every one needs space of its own: place exactly one in every row, every column and every colored reef pool, and never let two touch, not even at the corners.
It is the Star Battle puzzle with a reef on top. Deduction only, no guessing required, and there is a fresh board every day in Easy, Medium, Hard and Expert.
Fill the reef, press Guess, and share how you did. Plays on a phone or a computer.
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