Fill-a-Pix (also known as "Mosaik", "Japanese Mosaic", "Nurie Puzzle", "Nampre Puzzle") consists of a grid with number clues scattered in various places. Each number shows how many of the nine squares - the one with the number plus the eight around it - should be filled in.
The goal is to determine which squares are filled in and which should remain empty until the hidden picture is completely exposed.
Cross+A can solve puzzles from 4 x 4 to 40 x 40.