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.
• Think about space. Every square must be covered, so a long empty corridor needs a line to pass through it.
• Watch for dead ends. An empty square with only one free neighbour can never be filled: back up and reroute.
• One stroke per colour. Finish a line in one go to keep the full 150 points for the board.