Zentomino will recognize when the puzzle is finished. Features: - Various difficulty levels, with 4-12 piece puzzles. - Large, colorful, pieces that are easy to control. - Hint system! - Handy, always visible, piece trays to keep your puzzle area clean. - Solve puzzles in any order. - Puzzle memory keeps track of multiple, in progress, puzzles. - Shake your device to reset your current puzzle. - Track your progress, with a full view of all your completed puzzles. - Soothing background music by Atomicon.