What are these UF challenges?
How do challenges work and how can I participate?
Can I help promoting the challenges in some way?
What if I have an idea for a future challenge?
You can find all this information and more in the
Ultra Fractal challenges FAQ, which is also part of our very first UF challenge, the one for February 2011.
If you already know the rules, then you're good to go - read on for this month's challenge!
Previous editions:
You can find all of the previous challenges in this journal. Please keep in mind that the challenge rules changed after the 26th edition!

Links to ALL UF challenges (updated periodically!)Since the UF challenges are growing in number, instead of linking them all in each new one, I thought I'd make a collection journal for all of them. This will contain all challenges held so far, from the newest (top) to the oldest (bottom), all conveniently thumbed for you! It will also be updated each month so that ALL challenges are reachable from here, even the newer ones. And this journal will of course be linked in every challenge, to keep them all connected 
Sadly, challenge #11 is apparently a broken link. It's the only inaccessible one so far, though, so I may be able to restore it someday, if you guys wish me to.
Let's go!
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Now we can go on with the last challenge's results, and then I will introduce this month's challenge to you all.
Here is the
January challenge, themed "Pearly Perlin", and the deviations I've picked as the winners!
(Please note: do not feel offended if you're not in the top three. Winners are chosen basing on their way of representing the challenge theme, and I always try to be as impartial as possible while judging.)
A magical touch of summer lingers in the beautiful colours this fractal showcases: the perfect mix of warm and cold tones recreates a suggestive forest-like scene fiddled with leaves in motion and breaths of wind. A most unexpected and welcome outcome!
The softer side of Perlin, much in contrast with the first place work, shows just how different outcomes can be depending on the artist, and how much can be done even with a single formula. This sweet abstract comes in paper-like textures and a light touch, making it extremely pleasant to the eye.
Even in monochrome, or with bichromatic colour schemes, the Perlin formula can do wonders when placed in the right hands. Misha's sure are: behold the power of lighting crack across the full length of this stunning artwork!
This was an exceptionally good month for fractal productions and plenty other award-worthy fractals have been produced following this theme. Please take your time and have a look at them!
We're done for January. On to February!
Ultra Fractal monthly challenges Redux
Challenge #13: February 2012
February's challenge will be an Other challenge - its title being Happy Birthday to Us!
Time flies: it's already been a year ever since the Ultra Fractal challenges first started. Now that we all got this far, it's only natural to dedicate our anniversary month to a challenge type that celebrates the challenges themselves, right?
So for this month, you shall all bring on your celebration spirit and make amazing birthday-themed fractals! Be it cakes, gift boxes, or whatever else you may like - the merrier, the better!
Here are some celebration-inspired deviations from all over the site, both fractal and not. Have a look and give it your best shot:
Remember: to enter the challenge, post your deviation's link and thumb in a comment of this journal. ALSO: PLEASE MAKE SURE YOU LINK THIS NEWS ARTICLE IN THE DEVIATION. (Sorry for stating it so strongly, but I've had lots of people saying they'd enter the challenge without even stating it in their deviation comments, so I figured I'd better add this specification somewhere!)
Please spread the word by advertising this news article - we definitely want more participants. The more, the merrier!
This challenge's deadline is
February 29th, 2012. Ready, set, GO!!!
