1.Definition 

In a competition between two teams, each team consists of 1 to 2 competitors. Both team members enter the competition arena in each round. The team has a main controller and an assistant; only the main controller is allowed to touch or command the robots. Competitors engage in battles on the Dohyo (sumo ring) with robots they have built themselves. The competition begins following the referee's instructions, and the matches continue until one team earns 2 Yuhkoh (points), declaring them the winner of that match.

2.Contestant

2.1 A robotic team consists of 1- 2 members (Age 5-99 Years)

2.2 Age Categories (Autonomous / Remote Control)

2.3 Each competitor can compete in only one team per division.

2.4 The team will have 1 mentor or not

3. Sumo Ring 

3.1 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.

3.2 The Sumo ring shall be circular in shape and of the appropriate dimensions for the given size class. Material: Metal Diameter: 1500 mm. Hight: Above ground 50 mm.

3.3 The border line is marked as a white circular ring of a width with 50 mm. appropriate for the given class on the outer edge of the playing surface. The area inside white circular ring is black.

3.4 Shikiri lines (starting lines) consist of two painted parallel brown in the middle. This line width 2 cm., length 20 cm. and each separate 20 cm.

3.5 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

4.Requirement for Robot

4.1 A robot must width and length 20 cm. x 20 cm. unlimited for the height and must fir with the provided box 20 cm x 20 cm. The total mass must not over 3000 gram including battery and all equipment (excluding program loading cable and computer)

4.2 Robots are built or assembled from self-made parts or ready-made parts that are available, but they must not cause damage to the playing field.

4.3 There is no limit on the model or brand and the number of the main control board. 

4.4 There is no limit to the type, model and number of motors used to build the robot.

4.5 Power supply limitation.

  • 4.5.1 Unlimited number of batteries voltage and current.
  • 4.5.2 Batteries used in competitions must be clearly labeled with voltage and current. Do not use deteriorated batteries, faded labels, or chemical liquid spills or swelling to competitive.

4.5.3 If robots using Li-Po batteries need to be installed a fuse or short circuit or over current, there will be an inspection before the competition.

4.6 The robot can be enlarged while competing. But must not shoot, throw or send any other parts or equipment out of the robot during the race. Otherwise, you will forfeit that match immediately.

4.7 Fastening of screws and nuts or other fixing devices in the robot must act firmly. If during the match, any piece falls off, breaks, or onto the field, the judge will remove it and allow the competition to continue. The judge cannot be held liable for the consequences incurred during the removal of a piece that has fallen out of bounds.

4.8 หุ่นยนต์อัตโนมัติจะต้องติดตั้งโมดูลรับสัญญาณรีโมทจากกรรมการเพื่อใช้ในการสั่งเริ่มต้นการทำงานโดยจะต้องติดตั้งไว้ในจุดที่รับสัญญาณในรูปแบบแสงอินฟราเรดได้โดยง่าย และไม่มีสิ่งใดมาบดบังการรับสัญญาณ โดยทีมที่สมัครแข่งขันจะได้รับตัวรับสัญญาณจากผู้จัดในวันลงทะเบียนแข่งขัน 

Start Module

4.9 The robotic device's capabilities

  • 4.9.1 Automated robot must operate automatically after the judge’s signals through his remote.
  • 4.9.2 A robot in a remote-controlled version. The robot must be operated by a wireless remote control controlled through only competitors who are allowed to install sensors or detectors and competitor must ready to fix the problem if there is a collision of the remote signal

5. Prohibits for creating a robot.

5.1 Must not do anything which interferes the performance of competitor's detectors, such as transmitting infrared light to interfere of the competitor's infrared modules or installing parts that are white or tinted or reflective paint that causes competitor’s detectors to malfunction.

5.2 No components or equipment may be used. As soon as worn, it can harm sumo rings. Including the wheels that have been coated or impregnated with oil or another lubricant.

5.3 Must not install or use equipment containing liquids. Flour or dust, including air, can be sent to a competitor's robot by any means.

5.4 It must not use any equipment when operating normally, could generate a flame or burning

5.5 It must not use any device that can shoot, throw, or send parts from the robot to an opponent.

5.6 Engines running on any type of thermal fuel are not permitted.

5.7 Magnetic installation is allowed.

6. Competition

6.1 Competitive 1 match has 3 rounds and the total time of the match does not exceed 2 minutes. 

6.2 The winner of the competition is the team which scores the best in 3 rounds, i.e., wins 2 rounds out of 3, winning each round get 1 Yuhkoh if neither team scores 2 Yuhkoh before the end of time. The judges will decide as follows:

  • If both teams get 1 Yuhkoh (each round win) and there is a tie for 1 round, the lighter-weight team wins
  • If all 3 rounds are tied, the team with the lighter-weight wins.
  • If there is a tie in 2 rounds and either team wins the remaining rounds, the match is considered the winner.
  • If neither team scores at all. The team with the lighter-weight wins. Unless in the finals round there must be a special round competition(overtime).

6.3 The competition system will be a double elimination. Lose teams twice will be eliminated. The winning team advances to the next round. And compete in a knock-out style continuously until get the winning team, 1st runner-up, 2nd runner-up, and 3rd runner-up.

7. Start, Resume, End a Match

7.1 The competitors on the field must meet when the judge’s signals. 

7.2 The judge will throw the boundary marker onto the playing field. The boundary marker divides the field into 4 sections, where the robots are placed on opposite sides of each other in a designated area. And there must be any part of the robot touching the area white perimeter, according to the example in the picture.

Picture Simpale of Place robot

7.3 In the first round, take a luck. The losing team in the toss, the robot must be placed on the floor in accordance with Rule 7.2, with either side facing robot to the opponent. Then another team that wins the toss places the robot on the ground after them. Once the robot is placed, do not move its position.

7.4 Start a Match

7.4.1 Automated robot, when the judge gives a signal, through the remote system, the robot can start working, previously that there are no competitors within the ring area and the sideline area.

7.4.2 A remote-controlled robot, when the judge gives a signal, the robot can start working, previously that there are no competitors within the ring area and the sideline area.

7.5 The match stops and resumes when a judge announces so

7.6 The match ends when the chief judge announces so. The two teams retrieve the robots from the ring area, and bow.

8. Yuhkoh Point

8.1 One Yuhkoh point shall be given when: 

A Yuhkoh point is also given in the following cases: 8.1.1 The opposing robot has touched the space outside the ring by any component.

8.1.2 The opposing robot has touched the space outside the ring on its own.

8.1.3 The robots are entangled or orbiting each other with no perceivable progress for five seconds 

 

8.2 If the robot is still on the ring line, not yet considered scored, let's continue to compete. 

8.3 The match shall be stopped under the following conditions:

8.3.1 The robots are stucked or spliced each other with no perceivable progress for five seconds.

8.3.2 Both robots move and move in the same way e.g., forward -backward or turn around (or move in the circle) for five seconds including stop moving in any case. 

8.3.3. If any of the parties arising from the events in the preceding clause, the other will score 1 Yuhkoh.

8.3.4 If both robots come into contact with the ground outside the sumo ring. By not identified which first,. The judge will decide to restart the competition.

8.3.5 There is an incident that may be unsafe for colleagues, such as a robot that has smoke or fire. A blade attached to the robot's face falls off or breaks.

9. Foul Out

9.1 Competitors acting insultingly insult the opponent, whether by word or action, or have the robot make sounds, display messages, or perform insulting gestures. Insulting an opponent will result in a forfeit penalty.

9.2 Enter the ring area during the race. except in the case of entering to remove the robot when the Chief Judge announces the Yuhkoh score or during a stoppage of the game.

9.3 Throw or take any parts or equipment into the ring area 

9.4 Competitor in violation of rules 2, 4 and 5.

10. Punishment

10.1 Any competitor who violates the rules and provisions 9.1, 9.2, 9.3, and 8.3.5 will immediately forfeit and 2 Yuhkoh points awarded to their opponent. Rulebreaker have not right to protest.

10.2 A competitor who commits a mistake by rule 9.2 will lose 1 Yuhkoh point to the opponent.

10.3 If the team Menrot is involved in any offense, all teams under control will be disqualified from the competition.

11. Injuries and Accidents during the Match

11.1 A player can request to stop the game when he/she is injured or his/her robot had an accident and the game cannot continue.

11.2 When the game cannot continue due to player's injury or robot's accident, the player who is the cause of such injury or accident loses the match. When it is not clear which team is such a cause, the player who cannot continue the game, or who requests to stop the game, shall be declared as the loser.

11.3 Whether the game should continue in case of injury or accident shall be decided by the judges and the Committee members. The decision process shall take no longer than five minutes.

11.4 Giving Yuhkoh to teams that are unable to continue competing in case of section 11.1. The team was not the cause of the accident but cannot continue to compete, will receive 2 Yuhkoh to win the competition. But if there is already 1 Yuhkoh, will receive 1 additional Yuhkoh to a winner.

Prize

1st winner (one team) receives a trophy 

Competency certificate. 

สิทธิ์ในการเข้าร่วมการแข่งขันระดับนานาชาติ ณ ประเทศญี่ปุ่น

2. first runner-up (one team) receives a trophy 

Competency certificate. 

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3.second runner-up (one team) receives a trophy 

Competency certificate.

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4. third runner-up (one team) receives a trophy 

Competency certificate

5.fourth runner-up (4 ทีม)  

Competency certificate

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