⚠️ RULE ZERO – Zero Tolerance & Common Sense
In all sports, Rule ZERO applies, which states:
➤ "If you are not sure whether something is allowed, then it is probably NOT allowed."
All rules are based on common sense, the spirit of the sport, and the safety of all participants.
Any deliberate misinterpretation, violation of the meaning of the rules, or attempt to exploit gray areas for unfair advantage will not be tolerated and may lead to team disqualification from the competition.
🎯 GOAL
The goal of the Robot Athletes is to take the opponent out of the battle on the specially designed wrestling arena and be considered the winner.
👥 TEAM – COACH
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Each team can consist of One (1) - Three (3) members.
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The team shall designate one of its members as the Chief Coach of the Robot Athlete who shall be responsible for communicating with the Organizing Committee and the judges, for the technical inspection process and for the handling of the Robot Athlete during the Games.
🤼♂️ 1. Definition of the Wrestling Mini Match
📖 1.1. Definition
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A match is fought between two teams, each team having one or more members.
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Only two team members from each team may approach the ring;
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Only the operator will enter the game area. The rest of the team must remain in the competition venue but cannot wait in line.
➤ In other words, they cannot occupy an additional spot. If a team fails to comply with this rule, it will be disqualified.
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In accordance with the game rules (hereafter referred to as "these rules") each team competes on a Dohyo (Wrestling ring) with a robot to the specifications in Section 2. The match begins at the judge's command and continues until 3 rounds are completed. The judge determines the winner of the match (3-0, 2-1). After the match, the operator and the assistant will move to the designated waiting area for the next challenge and remain there until the next match. The judge determines the winner of the match. After the match the operator and the assistant will go to the assigned room for the challenge and wait there for the next game.
🤖 2. Requirements for Robots
📏 2.1. General Robot Specifications
A. Any robot design is allowed, if is not subject to the limitations of section 2.2.
B. A robot must fit within a square with the side length of 2.5 cm (25 mm).
C. The total mass of a robot at the start of a match must be under 25gr.
D. Maximum height of the robot is 2.5 cm (25 mm).
E. A robot may expand in size after a match begins, but must not physically separate into pieces, and must remain a single centralized robot. The robot’s feet must not expand during the match. Robots violating these restrictions shall lose the match. Screws, screw nuts, washers and other robot parts with a total mass of less than 5g falling off from a robot's body, shall not cause the loss of match.
F. All robots must be autonomous. Any control mechanisms can be employed, as long as all components are contained within the robot and the mechanism does not interact with an external control system (human, machine, or otherwise)
G. The robots must have displayed a number, offer by the organizers, on the outer casing of the robot in a visible place. The number it is used to identify the robot by the referee and it will be provided by the organizers.
⛔ 2.2. Robot Restrictions
A. For safety reasons the robot must be equipped with an IR kill switch (MicroStart Module Jsumo), to be operated by the judge. When the judge sends a kill signal the power to the motors shall be shut down. The robot builder is responsible for adding such a kill switch on the robot. The technical specifications for the IR receiver are given in the appendix 1. This module can supply the signal for activating the kill switch.
It is mandatory that the IR start module to function and the responsibility for is entirely of the team. If the module is not on the robot or is not working the team will be disqualified from the competition. If a problem occurs with the module during a fight it is recommended and allowed to be replaced.
B. Jamming devices, such as IR LEDs intended to saturate the opponents IR sensors, are not allowed.
C. Parts that could break or damage the ring are not allowed. Do not use parts that are intended to damage the opponent’s robot or it's operator. Normal pushes and bangs are not considered intent to damage.
D. Devices that can store liquid, powder, gas or other substances for throwing at the opponent are not allowed.
E. Any flaming devices are not allowed.
F. Devices that throw things at your opponent are not allowed.
G. 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 A4 paper (80 g/m2) for more than two seconds.
H. Devices to increase down force, such as vacuum pumps and magnets, are not allowed.
I. The blade and the expansion of the robot cannot be white.
🏟️ 3. Requirements for the Dohyo (Wrestling Ring)
🎯 3.1. Dohyo Interior
The Arena's interior is defined as the playing surface surrounded by and including the border line. Anywhere outside this area is called the Arena's exterior.
📐 3.2. Dohyo Specifications
A. The dohyo shall be circular made from wood with a thickness of 1.25 cm, painted in black with a diameter of 19.25 cm (192.5 mm).
B. The border line is marked as a white circular ring with a width of 0.625 cm (6.25 mm).
C. The Dohyo will be placed on a wooden surface, height 70 - 100 cm (700 - 1000 mm)
D. For all given dohyo dimensions a tolerance of 5% applies.
E. In the center of the arena, an "X" is placed to mark the robot placement area for the player. The referee is responsible for assigning the quadrants for robot placement.
🏞️ 3.3. Doyho Exterior
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".
🕹️ 3.4. How to Carry Wrestling Matches
A. One match shall consist of 3 rounds.
B. If the robots get stuck, the rules from the point 6.1 will be applied.
C. If one of the two robots won’t start, a restart will be done. If at this restart the same robot won’t start, the match will be won by the robot that moves.
🏆 3.5. Course of the Competition
A. The robots will be divided into groups according to the number of participants. The competition will take place in a groups/quarters/semifinals/finals system in order to allow as many rounds of play for each robot. Each match is played on the best out of 3 rounds system and will be supervised by 1 ref. The decisions of the ref must be unanimous and are final; questioning these decisions leads to disqualification.
B. If two robots of the same team will advance to quarters/semifinals/finals and play one against the other, they must play the match, without demanding that one of them to advance without play, or to demand to arrange the matches or the opponents.
C. The order of the robots in the groups will be made random, it will be made after the official opening of the competition, will be available on the website for all the participants. The ones that pass the groups will play quarter/semifinals/finals.
If the number of participants is not sufficient for group stages, the competition will be conducted in a format decided by the competition’s organizing committee.
D. During the whole contest when playing a match no breaks are allowed. Between matches (not between rounds), modifications, repairs, and reprogramming are allowed, as long as the robots are not removed from the game area.
E. All the teams will stay in the pits reserved for them. The teams can leave the pit only when they are called to the competition area. Teams will be called by a competition official, when they need to go to the waiting area which is near the competition area.
F. The teams will remain in the competition area, in the waiting area. Teams may leave this area only with the referee’s approval.
G. After a match is over, the teams must return in the pit reserved for them.
H. Each team has the responsibility to follow the starting grid (schedule), displayed on the website and in the team’s room. If you are called to play and you don't come in 5 minutes the robot is desqulified!!!.
I. Each team will have one operator. Only the operator is allowed in the waiting area and in the game area. The rest of the team will remain in the room or will follow the game from the audience.
J. During a match there will be a short break max 1 minute between the rounds for cleaning the robot and wheels, configure the robot and the fight must resume.
K. The robot configuration must be done before placing the robot in the ring.
L. Once placed in the ring the robot can't be touched nor the configuration changed remotely. The operator is not allowed to use telephones, remote controls or other devices for this purpose. If an attempt is made to change the configuration or any other interference with the robot, the referee will award the point to the opposite team
M. The players can't touch or remove the robots from the ring after the fight is over until the judge gives them the sign. If the players touch or remove the robot before the judge gives the sign no objections can be raised.
🛠️ 3.6. Technical Control
Each team will have to pass the technical inspection stage, in order to participate with theirs robots in the competition.
The stages of the process are:
At the begining of the competition
A. It will be checked if the number exists on the outer casing of the robot.
B. A photo will be taken to every robot in which the numer will be visible.
C. Checking the robot dimensions by placing a 2.6cm x 2.6cm (26mm x 26mm) box/frame, bottomless, over the robot.
D. Checking the height of the robot that must be under 2.6 cm (26mm)
E. Weighing the robot on a digital scale. The maximum value must be 26gr.
F. Checking the operation of the IR sensor to start and stop the robot.
Before every match
G. Checking the robot dimensions by placing a 2.6cm x 2.6cm (26mm x 26mm) box/frame, bottomless, over the robot.
H. Weighing the robot on a digital scale. The maximum value must be 26gr.
I. It will be checked if the number exists on the outer casing of the robot.
🚦 4.Start, Stop, Resume, End a Match
🎯 4.1. Robot Placing
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Upon the judge's instructions, the two teams approach the ring to place their robots on the ring. The operators will place the robots in the same time on the ring. The Referees will give the signal. After placing, the robots may not be moved anymore.
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The robot must be positioned behind the center of the arena "X" and at least one part of it must be within the placement area defined by the referee (quadrants).
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The referee will check if the robots are places ok. If the placement is not corect, the robot positioning will be made again.
🚦 4.2. Start
In Mega, Mini and Micro classes the Referees starts every round by sending a start signal with an IR transmitter. As soon as the robots receive the signal the round will start immediately, without any delay. The technical specifications for the IR receiver are given in the appendix 1. The contestants must acquire their own hardware.
The start will be made after the operator will be in the safe area. If the operator will leave the safe without referee approval, the team can lose a point or can be disqualified.
✋ 4.3. Stop, Resume
The match stops and resumes when a judge announces so.
The referee announces the moment when the robots can be placed on the arena, moment when the operator to retreat in the safe area and the moment when they can take the robots from the arena.
🏁 4.4. End
The match ends when the referee announces so. The two teams retrieve the robots from the arena area.
After the robots are retrieved the decision is final and no objections shall be declared.
⏱ 5. Time of Match
⌛ 5.1. Duration
One Match will be fought for a total of 3 minutes, starting and ending upon the referee's command.
5.2. Extention
An extended match, if called for by the judge, shall last for a maximum of 3 minutes
⏳ 6. Scoring
✅ One point shall be given when:
A. A team legally forces the body of the opposing robot to touch the space outside the arena.
B. The opposing robot has touched the space outside the arena on its own.
C. The opposing robot has left the ring surface completely, even if the other robot has touched first the space outside the arena (after a contact between the robots).
D. The opposing robot gets damaged without being able to continue and the team’s representative announces it.
E. If both robots leave the arena at the same time or almost at the same time, the robot that gets pushed outside will lose, even if the one that pushes touches first the space outside the ring.
F. If the opposing robot is unable to attack (e.g., it has flipped over or a wheel is missing or any other case where the robot cannot compete.), the point is awarded to the other team, even if that team’s robot has exited the arena. If the team can prove that it is part of their strategy then they can normally receive the point. In cases where the outcome is unclear, the referee will call for a rematch of the round.
⚖️ When judges' decision is called for to decide the winner, the following points will be taken into considerations:
A. Technical merits in movement and operation of a robot
B. Penalty points during the match
C. Attitude of the players during the match
🔄 6.1. The match shall be stopped and a rematch started under the following conditions:
A. If one of the two robots doesn’t start there will be one restart.
If at restart the same robot doesn’t start, the point will be won by the robot that moves.
B. The robots are entangled or orbiting each other with no perceivable progress for 10 seconds there will be one restart.
If at restart the situation is repeating, the winner will be the robot that moves more and shows the willing to fight.
C. If one fast robot get stuck in a slow robot for more than 5 seconds, there will be one restart.
If the progress is none or the robots move very slow, after 5 seconds the judge stops the match. The teams can't make any objection.
If at restart the situation is repeating, the robot that moves faster and attack will be the winner of the round.
D. If two fast robots get stuck for more than 5 seconds, there will be one restart.
If the progress is none or the robots move very slow, after 5 seconds the judge stops the match. The teams can't make any objection.
If at restart the situation is repeating, the robot that moves faster and attack more will be the winner of the round.
E. If one robot has 1 point and in the next round there is no winner, there are allowed only 2 rematches. If in the 2 rematches allowed no one wins, the robot that has 1 point will be the winner of the match.
F. Both robots move, without making progress, or stop (at the exact same time) and stay stopped for 5 seconds without touching each other. However, if one robot stops its movement first, after 5 seconds it will be declared as not having the will to fight. In this case the opponent shall receive one point, even if the opponent also stops. If both robots are moving and it isn't clear if progress is being made or not, the referee can extend the time limit up to 30 seconds.
G. If both robots touch the outside of the arena at about the same time, and it can not be determined which touched first, a rematch is called.
🛠️ 6.2. Repairs, modifications, unpredicted interruptions
From the moment a robot passes the technical inspection (and it is in the waiting area) until the match ends (all rounds are played), no changes can be made to the robot and no breaks are allowed for any of the conditions below.
- No repairs are allowed during a match.
- No battery change or charge is allowed during a match
- No blade change is allowed during a match
- No reprogramming is allowed during a match (the tactics selection before the fight is not considered programming)
- If the robot blade is detached from the robot during a round it's not allowed to put it back. The robot must continue fighting without the blade until the match is over
A. The robot must start and finish the match (all rounds played) without any modification (except the tactics selection for the robot) and can not leave the competition area for any reason.
B. During a match there will be a short break max 1 minute between the rounds for cleaning the robot and wheels, configure the robot and the fight must resume.
C. Battery change/charge, repairs or the replace of defective parts, blades can be made after the match is over until the next match involved.
D. If a robot gets broken during a match and can't continue, the match is won by the opponent robot. No repair is allowed.
🚫 7. Violations
⚠️ 7.1. Violations
Players performing any of the deeds described in Sections 2.2, 7.2 or 7.3 shall be declared in violation of these rules.
🗣️ 7.2. Insults
A. A player who utters insulting words to the opponent or to the judges or puts voice devices in a robot to utter insulting words or writes insulting words on the body of a robot, or performs any insulting action, is in violation of these rules.
B. It is considered serious misconduct when the operator and/or the assistant doesn’t retreat to the safe area or they don’t comply the indications of the referee
C. It is considered serious misconduct if the start/stop module doesn’t work or is missing, the robot will be disqualified.
🦺 7.3. Protective gear and the safe area
A minor violation is punishable with a warning and is declared when:
A. The competitor enter the ring during the match , unless the referee stops the match after the grant of a " Yuhkoh " point and the contestant goes to pick up the robot. To enter into the ring means:
a. A part of the player's body is in the ring.
b. A player puts any mechanical kits into the ring to support his/her body.
B. Performs the following deeds:
a. Demand to stop the match without appropriate reasons.
b. Take more than 60 seconds before resuming the match, unless the judge announces a time extension.
c. Does or says that which disgraces the fairness of the match.
d. The operator and/or the assistant will leave the waiting area without announcing the official of the competition or the referee regarding the reason of leaving.
➡️ ➤ If a team has 2 warnings, one point will be given to the opposite team, or the team can be disqualified depending of the gravity of the action that they did.
⛔ 8. Penalties
🚩 8.1. Penalties
A. Players who violate these rules by performing the deeds described in Sections 2.5 and 7.2 shall lose the match. The referee shall give three points to the opponent and order the violator to clear out. The violator is not honored with any rights.
B. Each occasion of the violations described in Sections 7.3 shall be accumulated. Two of these violations shall give one point to the opponent.
C. The violations described in Article 7.3 shall be accumulated throughout one match
📢 9. Declaring Objections
The operator of a team can present objections ONLY to the head Judge, before the match is over, if there are any doubts in the exercising of these rules. If there are no Head Judge present, the objection can be presented to the referee before the match is over.
🔧 10. Flexibility of Rules
As long as the concept and fundamentals of the rules are observed, these rules shall be flexible enough to encompass the changes in the number of players and of the contents of matches. Modifications or abolition of the rules can be made by the local event organizers as long as they are published prior to the event, and are consistently maintained throughout the event.
⚖️ 11. Liability
A. Participating teams are always responsible for the safety of their robots and are liable for any accidents caused by their team members or their robots.
B. The organization and the organizing team members will never be held responsible nor liable for any incidents and / or accidents caused by participating teams or their equipment.
🏆 WINNERS
At the end of the sport, the winners are announced separately for each age category:
🥇 1st Place
🥈 2nd Place
🥉 3rd Place
🏁 The ranking is determined based on the points achieved.
APPENDIX
📑 Remote start and kill switch
You can find detailed information about the usage of the startmodules on:
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