Pride Month · once a year

Rainbow Flow

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Game guideRainbow Flow: full rules, strategy tips and FAQ

▶ Pride Month · Spatial logic

Rainbow Flow

Eight boards of numbered, coloured dots, from a 5×5 warm-up to a 7×7 grand finale with eight colours. Draw one line between each pair, never crossing another, and cover every square to paint the whole board with a rainbow. Each board has exactly one solution.

8 boards
Logic

How to play

Join the pairs. Draw a line from each dot to the other dot of its colour, moving up, down, left or right.
No crossings. Lines can't cross or share a square. Drawing over a line cuts it back.
Fill the board. A board is solved only when every pair is joined and every square is covered.
Score. 150 per board with one stroke per colour, 10 less per extra stroke (up to 60), 50 less per hint, never below 30.

Quick tips

Start at the edges. Dots near corners and edges have the fewest ways to go, so their lines are often forced.
Short pairs first. Two dots side by side or one square apart usually join in the obvious way.

3 more tips in the Rainbow Flow guide →