Couples
Place two markers per region so no matching pair ever touches.
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How to play
Click a non-clue cell to cycle empty → marker 1 → marker 2; the two markers show in different colours. Equal markers that touch — or two of the same in one region — pulse red. Fill every region legally, then press Verify.
About Couples
Couples is a regions-and-markers logic puzzle: every coloured region must contain exactly one of each marker, and no two equal markers may be king-adjacent (touching in any direction). Read the clues, watch the borders, and keep the pairs apart.