Unlike speed climbing, in the bouldering category, climbers are not permitted to practice the routes in advance, instead encountering the problems for the first time on the day. Over 4 fixed routes of increasing difficulty, competitors get 4 mins to reach the top of as many of them as they can. There’s no rope on this one - the route’s set on a 4.5m-high wall, equipped with safety mats. Credit is given for securely reaching the top hold of a route in a controlled manner with both hands. If a competitor doesn’t reach the top of a given boulder, separate credit will be awarded if the competitor at least reaches a “zone hold” midway up a given route. Falling off is allowed but the number of attempts will also contribute to a competitor’s score, with the leader board weighted first by the number of tops, then attempts, and then zones. So, getting as many hard routes done, first time around, in the least time possible is the goal. The ability to carefully plan and execute moves, while being constantly aware of the time limit, adds to the stress levels of both competitor and viewer alike.