Coggy puzzle. The puzzle consists of 16 connected pieces that can be rotated and shaped. Ideal for travel. The package includes 40 puzzles. The puzzle cards are divided into 4 difficulty categories, each containing 10 puzzles. Arrange the gears so that the resulting shape matches the picture on the card. Empty spaces on the card can be any color. The gears are double-sided (color and black-and-white), and each side is used to solve a different type of puzzle.