I'm going to make the probably unpopular judgment of this being a bad idea. It's already acknowledged that this isn't much of a real question. It's one thing to have a complex computing problem that has to be solved - but tacking a contest onto it really changes the effect. Is there an issue with getting overwhelmed by Redstone Golf specifically? Most likely not, as there's only so many interesting problems to make. But that happens to not be the real issue.
The major thing is that as a site, we're not exclusive to any individual game, no matter how many questions we get for that game. So if we are to allow Redstone Golf, we will have to allow similar manners of contests for other games in order to be fair.
But what exactly would define an acceptable contest? The only thing in place here is an arbitrary likeness to Code Golf. And to be honest, "Code Golf-like" doesn't really make sense as criteria for acceptability on a Gaming site. For the most part, it's no different or more valid a question than "What's the best score you can get in X stage with Y equipment?". And that opens up pretty much every kind of conditioned time trial and high score run you can think of.
Trying to regulate these in any fashion that'll be fair in distribution but not in such frequency that they become the main attraction of our site... it's a maintenace nightmare. Any risk of getting overwhelmed is too much risk simply due to the inability to justifiably deny acceptance of any particular kind of contest.
Stack Overflow allows Code Golf but under a tight leash and under the hope that it only shows up occasionally as long as it doesn't overwhelm their normal question base. We already have that slot occupied by Identify This Game, which is a similar "question for sport" type with the added bonus of still being somewhat objective and thus not needing Community Wiki. With the breadth of our scope, it's simply not feasible to manage competition questions on top of those.
If you want a short solution to a circuit, stick with just asking about how to solve your problem. Please, let's not turn the parent Q&A into a house of competition.