This is an example of a starting Numberlink puzzle. The aim of this puzzle is to link all the pairs of matching numbers together with a line so that,

• The numbers must be at each end of the line.
• Lines can't cross each other.
• No T-junction.
• Lines can't loop back and 'touch'.
• All squares must be filled.

This is an example of a completed Numberlink puzzle.

The easiest way to solve Numberlink puzzles is to start drawing connecting lines. You will be able to logically deduce some (or part of the) connecting lines, but you won't be able to use logical arguments to deduce all of the lines (especially as the puzzles get bigger).