I will do my best to explain the scoring below but here is a video from the Vex Robotics group that may help us get started. YouTube Video
This game is based on the individual success of each team but it is designed to be collaborative. Each match consists of two alliances – red and blue, comprised of two teams chosen at random. No school affiliation is taken into account for match selection – two Hudsonville teams could be competing against each other. The benefit is that all teams are interested in the success of their ally.
One other thing I need to mention is that there is a size limitation for most of the match (I’ll explain more below). Robots can only be 18″ x 18″ x 18″ in size.
The matches are 2:00 minutes long. The first :15 seconds of the match is called the Autonomous period where the robot must score points without anyone operating it. During this time each robot can have up to four balls touching it for use. The team that scores the most points during this period earns a bonus 10 points.
Teams earn one point for putting a green ball in the Low Goal which is between the horizontal gray bar and in front of the net. Robots can push the balls under or over the bar but the ball must be touching or past the white line on the floor and they must be touching the floor. If the balls pile up then those that are not touching the floor are not counted.
If the team can shoot a green ball in the High Goal (the net) then it counts a five points.
The remaining 1:45 of the match is the Driver Controlled period.
There are 30 green balls and ten orange balls on the field and the orange balls have twice the point value (2 points for the low goal and 10 points for the high goal). Each alliance is given 24 extra balls that they can manually place on their robot if it is touching the Loading Zone, or on the floor of the Loading Zone. The Loading Zone is the triangle on the field closest to the teams. Once they place a ball they cannot touch it again.
Finally, in the last 30 seconds of the match, if a robot can pick up their ally in the Lifting Zone which is the large square closest to the team they will earn 25 points if they lift them 4″ or 50 points if they lift them 12″ off of the floor. When I mentioned the 18″ size limit above, there is an exception during the lifting period that allows robots to grow over the limit if they are in their Lifting Zone so they can pick up their ally.
How do we rank teams?
Teams are ranked first by their Record (W-L-T) and then by their Strength of Schedule (SP).
SP (Strength of Schedule Points) is where all teams in a match receive the points earned by the losing alliance. The idea behind SP is that if two teams have the same win record then the team with the more difficult match is ranked higher.
Example: If we had two teams with a 1-0-0 record then both would be considered tied. If Team 1’s match was 50 to 8 then Team 1 would earn 8 SP. If Team 2’s match was 40 to 20 then they would earn 20 SP because it would be considered a more challenging match. In this example Team 2 would be ranked higher.
|Team 2||1||10||20||Ranked 1st|
|Team 1||1||10||8||Ranked 2nd|
But why is one team scoring for the other alliance?
If one alliance happens to be dominating a match then it may be in their best interest to give the losing alliance more points so they can earn more SP. In the previous example let’s say that Team 1 scored 20 points for their opponents. Instead of 8 SP they would earn 28 SP and that would put them in first place over Team 2.
If you have questions the feel free to ask a coach or one of the officials between matches.