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Play Pairs (Dominosa) online: rules and tips

Previously: Dominosa

Pair the number grid into a complete domino set. Explore the rules below, then practise Pairs in the HubbardGames Library.

An account is needed to play and save your progress.

Pair the number grid into a complete domino set.

How to play Pairs

  • Tap the gap between two orthogonally adjacent numbers to make a domino. You can also tap the two cells in turn.
  • Every cell must belong to exactly one domino.
  • Each unordered pair appears exactly once, from 0-0 through the largest-number pair.
  • Tap either half of an existing domino to remove it. The puzzle completes when the whole grid is correctly paired.

Your first useful move

List the possible positions of a pair that appears only once in the grid. Once that domino is placed, remove overlapping possibilities and look for the next forced pair.

Playing on HubbardGames

Open a Library board to find this game’s controls. The how-to-play button keeps the rules close by while you solve, so you can check a detail without leaving the puzzle.

Choose your difficulty

The Library shows the available difficulty levels for this game. Choose a board that suits you, then return for another when you want more practice.

Can I practise without affecting the league?

Yes. Choose a puzzle from the Library to practise this game. Library practice does not add league points. You can return to an unfinished puzzle later.

Find your next favourite

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