While it bears some similarities to other line-linking puzzles, link-a-pix itself appears to be an original Conceptis puzzle.
Puzzle and Goal
An unsolved grid consists of a rectangular grid containing black or multicolored numbers.
The goal is to connect matching numbers and fill in the lines to create a picture.
The solved grid must satisfy the following conditions:
Each digit of value <em>n</em> greater than 1 is paired up with one other digit of the same color and value such that the line between them travels orthogonally through <em>n</em> cells (including the terminals).
Cells containing 1 represent single cells, and are colored appropriately.