Shortly after making this post I will introduce my first question in my multistage problem contest. Each of these questions will involve having to solve four different problems that have been created in the past and using the answers from these problems to solve the final problem. The final problem will have the links to all of the previous problems necessary to solve it and you can also find them under the tag #Cole'sProblems. The first person to solve the final stage of the series will receive 10 points, the second person will get 9 points and so on until the tenth person receives 1 point. I will continue to make problems until someone reaches 50 points and that person will be the winner. If there are enough people participating I will continue to do this and refresh the leaderboard at that point.
I intend on keeping the preliminary problems at a level 4 difficulty as to not prevent people from attempting the final problem. In the future the final problem may be harder than the preliminary problems but since this is the first series, the final problem will be roughly at the same level as the preliminary problems. I also want to gauge the audience that will be participating in the contest and see what level of difficulty will be best. In the case of this first series, the final problem may be easier than some of the preliminary problems.
I hope other users begin to post multistage problems as well. I've started up the tag #MultistageProblems so anyone's multistage problem can be found easily.
The first series can be found here.