Fill-A-Pix Logic Grid Puzzle Book USA: Mosaic Puzzle Book USA &America in Easy and Medium for Adults and Kids (Fill-A-Pix Puzzles)
Another challenging mosaic puzzle collection with 100 fun grid puzzles. One more famous brainteaser and logic training game for everyone. Mosaic puzzles are also known as Fill-a-Pix, Nurie Puzzles, Nampre Puzzles, Count and Darken.