Print a page for each child. Have the children roll a die. The first one to complete coloring their monster is the winner. Two robots compete in a head-to-head match following the basic system of traditional human sumo matches. Robots are allowed no weapons, and are not allowed to flip each other. The sole purpose is a pushing match between the two robots to force the other from the arena. C – they are separate classes and do not compete against each other. Article 1 A match is fought between two teams, each team having one or more contestants.
Article 2 The dohyo interior is defined as the playing surface surrounded by and including the border line. Anywhere outside this area is called the dohyo exterior. The ring shall be circular in shape and of the appropriate dimensions for the given size class. The separation distance between the lines is measured to their outside edges. The border line is marked as a white circular ring of a width appropriate for the given class on the outer edge of the playing surface. The ring area extends to the outside edge of this circular line. Article 4 There should be a space appropriate for the given class outside the outer edge of the ring. This space can be of any color, and can be of any material or shape as long as the basic concepts of these rules are not violated. This area, with the ring in the middle, is to be called the “ring area”. Any markings or parts of the ring platform outside the minimum dimensions will also be considered in the ring area.
A robot must fit within a square tube of the appropriate dimensions for the given class. A robot may expand in size after a match begins, but must not physically separate into pieces, and must remain a single centralized robot. Robots violating these restrictions shall lose the match. Screws, nuts, and other robot parts with a total mass of less than 5 grams falling off from a robot’s body shall not cause the loss of match. The total mass of a robot at the start of a match must be under the designated weight for the given class. Autonomous robot operation must begin automatically no less than five seconds after being started by the user. Robots starting before the five second mark forfeit that Yuhkoh point. Jamming devices, such as IR LEDs intended to saturate the opponents IR sensors, are not allowed. Parts that could break or damage the ring are not allowed.
Do not use parts that are intended to damage the opponents robot or it’s operator. Normal pushes and bangs are not considered intent to damage. Devices that can store liquid, powder, gas or other substances for throwing at the opponent are not allowed. Any flaming devices are not allowed. Devices that throw things at your opponent are not allowed. Sticky substances to improve traction are not allowed. Tires and other components of the robot in contact with the ring must not be able to pick up and hold a standard 3″x5″ index card for more than two seconds. Devices to increase down force, such as a vacuum pump or magnets, are only allowed in the 3 kg class.
They are not allowed in all other classes. All edges, including but not limited to the front scoop, must not be sharp enough to scratch or damage the ring, other robots, or players. In general, edges with a radius of greater than . 005″, as would be obtained with a unsharpened . 010″ thick metal strip, should be ok. Judges or competition officials may require edges that they deem too sharp to be covered with a piece of tape. One match shall consist of 3 rounds, within a total time of 3 minutes, unless extended by the judges. The team who wins two rounds or receives two “Yuhkoh” points first, within the time limit, shall win the match.