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==Playing field and scoring== <gallery perrow=4 heights=250px widths=240px> File:44978 - 1992 game materials.png|The playing field (not to scale)[https://www.frcarchive.com/index.php?q=post/view/44978] File:44979 - 1992 game materials.png|Field drawing with dimensions, locations of posts and balls, and home bases [https://www.frcarchive.com/index.php?q=post/view/44979] File:1439 - 1992 1992cmp frc151 match.jpg|Tennis balls being set up before the beginning of a match [https://www.frcarchive.com/index.php?q=post/view/1439] File:45573 - 1991 1992 robot.jpg|[[1991 Test Game|Late 1991 test game]] setup where the balls started in pyramids around the field [https://www.frcarchive.com/index.php?q=post/view/45573] </gallery> The playing field is comprised of a 16 foot square plywood surface 2 1/2 feet off the ground and covered in 1 to 2 inches of whole kernel corn. An 8 inch tall Plexiglass rim forms the perimeter of the field, and the plywood and Plexiglass are marked with each team's 20 inch square home base centered on each side of the field. Five 2 inch diameter PVC pipes are located around the field, with one 12 inch tall section in the middle of the field and four more located nine inches in from adjacent walls of the field. 155 tennis balls representing "treasure" are spread around the field. 150 one-point balls begin in the center of the field centered around a 12 inch post with one of the orange 25 point balls on top. Two more orange 25 point balls start on the two taller 36 inch posts in opposite corners of the playing field, with two two-tone 10 point balls starting on the top of 24 inch posts in the other opposing corners. Matches last for two minutes in which four robots attempt to pick up and transport balls back to their own home base. Robots must start the match inside the home base and within the maximum size limitation, but can expand outwards after the start of the match. Tennis balls located within a team's home base at the end of the match are counted and scored. Teams played in the red, white, blue, and green starting positions. The control system umbilicals were color-coded to ensure teams plugged their robots into the controls for their position. Although the manual originally outlined a 25 foot tall structure around the field to support the control system umbilicals, in practice the umbilicals were dropped down from the gym ceiling at the [[1992cmp|competition]]. [[1991 Test Game|An early version of Maize Craze tested in late 1991]] had the treasure starting in several pyramids around the field, with no central 25 point ball. ===Game strategy=== <gallery perrow=4 heights=250px widths=250px> File:1400 - 1992 2004 2004bc frc126 frc190 match robot.jpg|[[frc190|Team 190]] and [[frc126|team 126]]'s robots at [[2004bc|BattleCry 2004]] [https://www.frcarchive.com/index.php?q=post/view/1401] File:1396 - 1992 1992cmp frc45 robot.jpg|[[frc45|Team 45]]'s robot in front of its static home base structure loaded with a delivery of "treasure" [https://www.frcarchive.com/index.php?q=post/view/1396] File:1423 - 1992 1992cmp frc-115 frc-5 frc146 match robot.jpg|[[frc-5|Team -5]]'s robot extended outward into the middle of the field [https://www.frcarchive.com/index.php?q=post/view/1423] File:43422 - 1992 1992cmp frc111 match robot.png|[[frc111|Team 111]]'s robot with a front scoop and a basket that extended up the PVC poles to collect the colored balls from below [https://www.frcarchive.com/index.php?q=post/view/43422] </gallery> In general, teams had to decide whether to focus on collecting as many of the central balls as possible or go for the outer balls. The central 25 point ball could be knocked off its post and picked up like the one point balls. Scoops that lifted into a large open ball collection area in the robot were fairly common and effective. Mechanisms for picking up the balls from the PVC pipes often located themselves further down the PVC pipe and then extended upwards to collect the ball from below. Because balls needed to be in a team's home base at the end of the match, robots would at some point make a "mad dash" back to their base. Some machines included a static base or unmoving component of their robot that could securely hold balls in their home bases. Machines that could deposit balls could do so early and then focus on preventing an opponent from making it back to their base as a defensive maneuver. Tipping an opponent's robot was allowed, but mechanisms designed to intentionally damage other robots were not allowed. [[frc126|Team 126]]'s winning robot had a drivetrain consisting of twelve thin discs, six on each of two axles at the front and rear of the machine. As the robot ran over balls, the discs would flex and allow tennis balls to accumulate between the discs in round cutouts. The more balls collected, the more additional traction they provided for the machine. An extendable cage could ride up the PVC pipes and collect the higher-point balls. [[frc45|Team 45]]'s finalist robot was the most effective "home base" runner and could spend the end of the match trying to push opponent robots away from their home bases with their own treasure safely scored. Teams [[frc111|111]] and [[frc190|190]] both had effective scoopers with large ball catchment areas and extending devices to collect the raised colored treasure. In the second and final match of the finals, teams 111 and 45 both attempted to push 126's NY-alator out of scoring position during the last 30 seconds.
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