[robocup-nao] A Few Question about the Rules

[Stefan Czarnetzki]

Hi,

I would like to ask for clarification about the kick-off rule.

The rule is:
"A “kick-off shot” can never score a goal. A “kick-off shot” is a shot 
taken after a kick-off before the entire ball having left the center 
circle, including the boundary line."
In the definition of the kick-off shot there is no mention about the 
kicking robot being of the defending or opposing team. So judging from 
the rule itself, it should also concern the defending team and no goal 
at all can be scored from that position directly, neither by the team 
that actually has kick-off or the defending team.

In an answer to a similar question 2 weeks ago Thomas wrote (as cited 
below) that the rule applies only to the attacking team.

It would be nice if you could clear this up.

Thanks!
Stefan


Thomas Röfer wrote:
>> 10. The rules state that the ball may not be kicked into the goal
>> directly from the kick-off position; it must first leave the center
>> circle, and only from there may it be kicked and a goal scored. Some of
>> the videos we have watched, however, appear to contradict this rule; a
>> ball is gently shoved, remaining in the center circle, and then it is
>> kicked directly into the goal. Is this a new rule? Or have we
>> misinterpreted the rules?
>>
>> The kick-off related rules are revised after the local competitions,
>> therefore, those videos may not be compatible with the current rules.
>>     
>
> Actually, they mostly are. The defending team is allowed scoring a goal from
> within the center circle, the attacking team is not (before the ball left
> the center circle at least once). However, the new rules allow the attacking
> team to be much closer to ball than the defending team. So the attacking
> team can expect that their robot will be the first at the ball, so it can,
> e.g., pass it to a teammate outside the center circle, before any defending
> robot can interfere (if the attacking team is not too slow).
>
> Cheers,
>
> Thomas
>
> on behalf of the SPL Technical Committee
>
>