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[Sumo] aliases here.
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From the Wikipedia page on Robot Sumo:
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__Robot-sumo__, or pepe-sumo, is a sport in which two robots attempt to push each other out of a circle (in a similar fashion to the Japanese sport of [sumo|https://en.wikipedia.org/wiki/Sumo] ). The robots used in this competition are called sumobots.
[{Image src='attach/RobotSumo/RoboCore_Robot_Sumo.jpg' align='right' class='imgFloatRight' width='300' caption='Robot-sumo'}]
The engineering challenges are for the robot to find its opponent (usually accomplished with infrared or ultra-sonic sensors) and to push it out of the flat arena. A robot should also avoid leaving the arena, usually by means of a sensor that detects the edge.
The most common "weapon" used in a sumobot competition is an angled blade at the front of the robot, usually tilted at about a 45-degree angle towards the back of the robot. This blade has an
adjustable height for different tactics.
Robot-sumo is divided into classes, fought on progressively smaller arenas:
* __Heavy-weight.__ Standard in the [National Robotics Challenge|https://en.wikipedia.org/wiki/National_Robotics_Challenge] . Robots may weigh up to 125 pounds (56.8 kg) and fit in a 2-foot cube (61 cm).
* __Light-weight.__ Also standard in the [National Robotics Challenge|https://en.wikipedia.org/wiki/National_Robotics_Challenge] . Robots may weigh up to 50 pounds (22.7 kg) and fit in a 2-foot cube (61 cm).
* __Standard class__ (sometimes named Mega-sumo) robots may mass up to 3 kg and fit inside a 20 cm by 20 cm box, any height.
* __Mini-sumo.__ Up to 500 g mass, 10 cm by 10 cm, any height.
* __Micro-sumo.__ Up to 100 g mass, must fit in a 5 cm cube.
* __Nano-sumo.__ Must fit in a 2.5 cm cube.
* __Pico-sumo.__ Must fit in 1.25 cm cube.
* __Femto-sumo.__ Must fit inside a 1 cm cube.
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__The NZPRG will conform to the [Mini Sumo Rules|https://robothon.org/rules-sumo/].__
!! Sumo Ring Sizes
Following are the metric ring sizes:
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||Ring Name||Ring Diameter||Ring Height||Border Width||Start Line Width||Start Line Length||Start Line From Center||Exterior
|__International__|154 cm|5 cm|5 cm|2 cm|20 cm|10 cm|100 cm
|__Mini__|77 cm|2.5 cm|2.5 cm|1 cm|10 cm|5 cm|100 cm
|__Micro__|38.5 cm|1.25 cm|1.25 cm|0.5 cm|5 cm|2.5 cm|100 cm
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!! References
* __[Zumo Robot]__, a popular tracked mini-Sumo robot from Pololu
* [Illustrated Guide to American Robot Sumo|https://www.robotroom.com/SumoRules.html]
* __SumoBoy__, a Latvian mini-Sumo robot ("''Reflects the best of Latvian robotics team experience and know-how''")
** [Few examples of Mini Sumo robot competition strategies|https://www.youtube.com/watch?v=rthMiqFCiBA] (YouTube)
** purchase [SumoBoy|http://www.robot-nest.com/purchase/mini-sumo-robot-sumoboy-20], comes in black, blue and red, €219.00 (NZ$380) + shipping from Latvia
** the "decorative armor" is available separately
* [Sumo Robots Push Opponents in Robot Sumo Contests|https://www.robotroom.com/Mini-Sumo-Robots.html] from Robot Room (including how to make your own Mini Sumo robot ring)
!! Has Tag Of ''RobotSumo''
[{HasTagOf RobotSumo}]
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[{Tag Zumo RobotSumo}]