collectively as five-star Concours de Saut International (CSI) rules. Speed derby Puissance: a high-jump competition in which the final wall may reach over seven feet tall. The current, (April 2013), world record is , held by Captain Alberto Larraguibel Morales riding Huaso, in 1949. Six-bar: riders jump six fences set in a straight line. In most places, fences are placed at equal distances apart, the first fence is the lowest and each subsequent fence is higher than the one before. Horses are either penalized or eliminated from the competition if they knock down a rail. After each round where more than one competitor goes "clean," or is tied for the fewest faults, the six fences are raised in height for each subsequent round until there is a winner. Occasionally, if there are multiple jump-offs, the final fences may be raised to well over six feet. Gambler's choice/accumulator: An event where exhibitors choose their own course, with each fence cleared worth a given number of points based on difficulty. The entry who accumulates the most points within a set time limit on course is the winner. Calcutta: A jumping event where spectators bet on which horse will win by means of an auction where the highest bidder has the exclusive bet on a given horse. Although the exact mechanism varies by region and culture, as a rule, the spectator who bets on the winner collects all money bet and then splits the purse with the owner of the winning horse. Maiden, novice, and limit: Jumping classes limited to horses with fewer than one, three, or six wins. Fences are usually lower and time limits more generous. Match race or double slalom: two identical courses are set up in a split arena, and two horses jump over the courses in a timed competition. Touch class: A class held much as a normal show jumping class, except that if the horse touches the jump it is considered four faults. Faults converted: A class in which any faults are converted into seconds on the clock, usually at the rate of 1 second per fault (i.e., one rail = 4 seconds) Types of show jumps Show jumping fences often are colorful, sometimes very elaborate and artistic in design, particularly at the highest levels of competition. Fences are designed to break away if stuck by the horse, both to simplify scoring, but also for safety, particularly