The BOT

Bot Hockey robots are normally wheeled devices with two or more powered wheels. However, other configurations such as legs, shuffle feet, ground effect hovering, and various snakelike configurations are allowed as long as the robots meet the size and weight limits listed below. Each team should have three robots for the full tournament. The substitution of robots during the competition within the team or with other teams is forbidden.

Bot Specification

A Sumo Bot must fit within a square box of 25cm X 25cm with unlimted height. Bot may expand in size after a match begins, but must not physically separate into pieces, and must remain a single centralized bot. Bots 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.

• Maximum weight should not be more than 3Kgs (including battery for wirelessly controlled bots. However, a tolerance of 5% is acceptable.). 
• Batteries must be sealed, immobilized electrolyte type (gel cell, lithium, NiCad, or dry cells).
• Batteries must be 12 volts for this challenge.
• The bot can be autonomous or manually controlled using a Remote-control system in accordance to IFES regulations, and regulated by tournament officials. 75Mhz controllers are specifically prohibited. All remote controls must be digitally-mated pairs. Remote control robots start on a signal from the tournament official. 
• Each robot must carry a top marker unique identity so that it can be distinguished by the referee easily. Unmarked Robots are not eligible to play.
• The bot must not emit infrared light. However, optical sensors (e.g. infrared-distance-sensors) may be used if they do not affect other bots.
• Infrared light-reflecting materials must not be used on the outside. If bots are painted, they must be painted matte. Minor parts that reflect infrared light could be used only if other robots are not affected. Bots must not produce magnetic interference for other robots on the field.
• Bots must be constructed and programmed in a way that their movement is not limited to only one dimension and must move in all directions.
• Any robotic parts/building material can be used until the bot meets the above specifications and if the design and construction are primarily the original work of the team as ready-made bots are not allowed to compete in the competition.

• 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 diameter will be 180cm, height 5cm. and surface would made of coated steel plate.
• Shikiri lines (starting lines) consist of two painted parallel brown (or equivalent for absorption of IR light) lines centered in the ring with appropriate width of 2cm, length 20cm and separation of 20cm. The separation distance between the lines is measured to their outside edges. White border width would be 5cm.
• The border line is marked as a white circular ring on the outer edge of the playing surface. The ring area extends to the outside edge of this circular line.

A match is fought between two teams, each team having one or more contestants. Only one team member may approach the ring; other team members must watch from the audience. In accordance with the game rules (hereafter referred to as "these rules",) each team competes on a Dohyo (sumo ring) with a robot that they have constructed themselves to the specifications mentioned. The match starts at the referee's command and continuous until a contestant earns two Yuhkoh points. The judge determines the winner of the match.

• One match shall consist of 3 rounds, within a total time of 3 minutes, unless extended by the referee.
• The team who wins two rounds or receives two "Yuhkoh" points first, within the time limit, shall win the match. A team receives a "Yuhkoh" point when they win a round. If the time limit is reached before one team can get two "Yuhkoh" points, and one of the teams has received one Yuhkoh point, the team with one Yuhkoh point shall win.
• When the match is not won by either team within the time limit, an extended match may be fought, during which the team who receives the first Yuhkoh point shall win. Alternatively, the winner/loser of the match may be decided by judges, by means of lots, or by a rematch.
• One Yuhkoh point shall be given to the winner when the referee' decision was called for or lots were employed.
• Match starts upon the referee's instructions, the two teams bow to each other in the outer ring, approach the ring, and place a bot within their half of the ring on or behind the Shikiri line. (A bot or a part of a bot may not be placed beyond the front edge of the Shikiri line toward the opponent. Note that is not required that a bot be placed directly behind the Shikiri line; it may be offset to the side, as long as it is behind an imaginary line collinear with the Shikiri line.) When the judge announces the start of the round, the teams start their robots, and after a five second pause the robots may start operating. During these five seconds, players must clear out of the ring area.

Time of Match

• One Match will be fought for a total of 3 minutes, starting and ending upon the referee's command. The clock shall start ticking five seconds after the start is announced
• An extended match, if called for by the referee, shall last for a maximum of 3 minutes.
• The time elapsed after the judge announces Yuhkoh and before the match resumes will not be included in time of match. The standard delay before the match resumes shall be 30 seconds.

Points (Yuhkoh)

One Yuhkoh point shall be given when:

• A team legally forces the body of the opposing bot to touch the space outside the ring, which includes the side of the ring its self.
• A Yuhkoh point is also given in the following cases:
• The opposing bot has touched the space outside the ring on its own. Either of the above takes place at the same time that the end of the Match is announced.
• When a wheeled robot has fallen over on the ring or in similar conditions, Yuhkoh will not be counted and the match continues.
• When referee' decision is called for to decide the winner, the technical merits in movement and operation of a bot will be taken into considerations

The match shall be stopped and a rematch started under the following conditions:

• The bots are entangled or orbiting each other with no perceivable progress for five seconds. If it is unclear whether progress is being made or not, the referee can extend the time limit for observable progress for up to 30 seconds.
• Both bots move, without making progress, or stop (at the exact same time) and stay stopped for five seconds without touching each other. However, if one robot stops it's movement first, after five seconds it will be declared as not having the will to fight. In this case the opponent shall receive a Yuhkoh, even if the opponent also stops. If both robots are moving and it isn't clear if progress is being made or not, the judge can extend the time limit up to 30 seconds.
• If both bots touch the outside of the ring at about the same time, and it can not be determined which touched first, a rematch is called.

• 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.

Misconduct - Players, coaches, and spectators must exhibit respectful conduct at all times. Officials may remove participants from the Match or Tournament for infractions or violations of the Code of Conduct.  

Early Start - Players will arm but remain on the ground until the start signal begins the Set. 

Offsides - After a successful goal, the striker and all teammates must retreat back across the centerline before attacking again. No point will be awarded until all active teammates have all cleared the attack zone.

Venue : Delhi/NCR (India)
Registration Fee :

• For Indian residents: INR 2950/- (Inclusive GST) per challenge.
• For Non India residents: USD 50 per team.

Prize Bifurcation: INR 60,000 (1st Prize) | INR 40,000 (2nd Prize) | INR 25,000 (3rd Prize)

Registration mode : Online.
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