Dog' Sudoku Medium Genie Our "Dog' SUDOKU(R)" line of interactive puzzles for dogs is developed and patented by My Intelligent Pets(R). The games come in various sizes appropriate for your dog (Small, Medium, Large) and at four levels of difficulty (Basic - 4 fields, Advanced - 6 fields, Expert - 9 fields, and Genie - 16). The Gene version of Sudoku is a most complicated puzzle that consists of 15 tiles and 16 fields where your pet's favorite treat can be hidden. According to dog's behaviorists 15 minutes of mental stimulation with employment of interactive game equivalents to 1 hour of physical exercise. This is especially important for the dogs living in large cities where long walks are difficult and impossible , senior dogs with ailments that do not allow them for prolong outings and those living in cold climates where going outside can put animal's health at risk. How to Play: 1. Hide the treats in the indentations underneath the tiles. 2. Encourage your dog to find the treats by moving the tiles. 3. Praise the dog every time it has moved a tile and found a treat. Only use dry treats that fit into the indentations. Deduct the number of snacks that your dog receives in the game from its total daily ration to keep its overall weight balanced. Tip: We recommend that you start with the Basic, Advanced or Expert variation and only move to Dog' SUDOKU(R) Genie version when your dog masters first three levels of the game. Allow him to watch you hiding the treats in the fields to stimulate his curiosity. By being patient, showing it how the game works and giving him encouragement, you can ensure your dog will enjoy solving the puzzle while sharing quality time with you. Never let your dog play unsupervised, and intervene if it starts to chew pieces of the game. Regularly check the pieces for any damage such as splinters and nicks. Clean by wiping with a damp cloth. Do not use abrasive cleaners. Additional information: Dimensions: 15"x15"x2" Weight: 8 lb All our games and puzzles are made from certified wood covered with water-based varnish that is not harmful to humans and animals. Please keep the game dry and free of water exposure, as the wooden pieces may swell otherwise. Use only dry treats for playing with our games Keep out of reach of small children since removable parts can be a choking hazard to them.