Ok, sorry about being a bit absent. I've updated the player/judge lists based on what people have posted.
There was a question about tapping into a cavern and simply not building stairs down to it - yeah, that's cool. It's a natural boundary. If you do build stairs, you can't hatch/lock it, though. Once you commit, you commit.
And like Imp says, I would be shocked if someone managed to do everything. This is a unique challenge because we have all of these other issues to work out. Work it out the best you can, go bombing through the caverns, and enjoy yourself. By the time we get to DFM4 most of the bugs will be ironed out and we'll go in a new direction.
Certainly if you crash you can roll back to the start. I've had to do that once when it would hard crash as soon as I opened the military screen and tried to do anything.
Contestants are free to go to the 31.02 version if they want, and if it's not save compatible feel free to restart. I would probably suggest waiting, though, in that case. It doesn't seem to fix the combat problems (weapon behavior seems to be messed up in the raws) nor does it appear to fix the pathing bugs (which I agree are seriously problematic), so if restarting is required, it might be worth waiting for .03 or .04. If you really want graphics, it looks like that might be working better, but without the benefit of the .png goodness from the merge yet.
On another note, it looks like the Mac/linux version is going to be later so we'll definitely be extending the deadline.
All that said, my fortress is now in its 3rd year. Farming is fully up to speed, lots of booze, lots of prepared meals. No deaths yet, though one guy got his ass kicked pretty bad. I only now have figured out how the military screens work. My problem is that it's not obvious to me what the screen should look like when I've got weapons assigned and whatnot, and I was always removing weapons when I thought I was adding them. I finally paid much closer attention to what the keypresses were labeled at and figured it out. It's really all very cool once it clicks, but the learning curve is fairly steep. That said, I'm still having trouble getting the soldiers to equip. I'm positive they have weapons assigned, the weapons are created, and I have an arsenal dwarf with NO JOB, and with an office that he's used before, but somehow the weapons just aren't ending up in the soldiers hands.
I'm a bit anxious because there are two ambush squads permawrestling with some zombie horses that eventually might decide to pay attention to the fort. I've got no doors or drawbridges, so if they show up, I'm in a world of hurt until axes get in dwarf hands. Maybe I should have installed some traps...