Schladming "red" and "black" slopes for competitive skiers, and many "blue" slopes for beginners, but generally the Planai is an intermediate to expert mountain. The Hochwurzen is the other mountain in Schladming. It has three main red runs off the four-man chair lift and a sledge run. This mountain is better suited to more experienced boarders and skiers. Also, a 15-man cable car can take groups of up to five to the top. The surrounding mountains are popular with climbers and hikers and country lovers. In the summer, downhill toboggan runs and an outdoor swimming complex are open. The UCI Mountainbike
Expert Simon and Kevin Gilmartin proposed a model of learning in chess called MAPP (Memory-Aided Pattern Recognizer). Based on simulations, they estimated that about 50,000 chunks (units of memory) are necessary to become an expert, and hence the many years needed to reach this level. More recently, the CHREST model (Chunk Hierarchy and REtrieval STructures) has simulated in detail a number of phenomena in chess expertise (eye movements, performance in a variety of memory tasks, development from novice to expert) and in other domains. An important feature of expert performance seems to be the way in which experts are able to