Okay. Post serious puzzles. There's only one standing, and the person who solves it first, and has an "approved solution", can post their puzzle.
We are posting serious puzzles. Just because they don't exactly follow the original format doesn't mean they aren't legitimate. This is all for fun anyway; it's not like people get prizes for solving a puzzle. Having more puzzles floating around gives people more options. If they can't figure out one, they just try a different one. Again, the point is just to have fun solving the puzzles.
The one thing about puzzles should be that they
are in fact solvable though. Make sure your intended solution follows the rules, keeping in mind things such as summoning sickness, always-unupgraded mutants, correct casting costs, etc.
There are currently three unsolved puzzles I think. If the majority thinks that we should only have one at a time and/or they should be set up the same way as in the OP, then changes can easily be made.
Essence's PuzzleUsing a mono deck and starting with no pet and no zero-cost creatures in your hand, end your turn with 2 pillars and nothing else -- no creatures, cards in hand, permanents, or quanta -- and your opponent at 67 HP.
No multiple copies of any card except towers.
Krahhl's PuzzleHave as much damage output as you can before the end of your first turn, losing the coin toss. No pet.
If your number ≥ mine, you get it right.
kurathedog's PuzzleEnd your first turn with 63 cards in deck (win coin toss)