Well, right now there are a little more than 400 problems in queue, and we post two problems a day (only one one weekends), besides the ones that get voted down and deleted. There are 10 problems in the "active" queue at any time, that are being discussed and voted on. Just to give you the heads up, the most recent problem currently in the queue was submitted July 18. So, it looks like the wait time is down to around a month or a month and a half (compared to almost three months, not too long ago).

Each person's problems are assigned a 'queue weight.' Their earliest two problems have a queue weight of 1, the next two have a value of 2, and so on. The idea is that everyone's QW 1 problems are looked at before any of the QW 2 problems, so if you are just submitting a problem, you won't have to wait for every one of 50 problems submitted by someone else (meaning, you won't have to wait for all 400 of the current problems to be sorted out before we look at yours).

And yes, Gamer makes a good point; there are hundreds of problems already on the site, and pretty much all of the more common puzzles are on here, so look around. If you see a problem on the site after you have already submitted the same one, there is the option to delete the problem yourself (and save us the trouble; we of course won't post duplicate problems anyway). Riddles and lateral thinking problems are also discouraged in favor of more math- and logic-based puzzles.

Welcome, Karen! Just wait until my problems are posted. No one will get them. jk Actually they're are probably going to be solved right away.

It is impossible with those 15 dominoes (you have 5- '0's and you have 7 '4's)). Any complete chain will begin and end with a '0' and a '4'.

See Domino Chain for a much more complete discussion.