The January 2012 Algorithm Challenge will take is taking place on http://www.codechef.com/JAN12.
Here are the details:
Date: 1st January 2012 to 11th January 2012
Duration: 10 days
Problems: 5 binary problems of varying difficulty levels + 1 challenge problem.
Problem Setter: Sergey Kulik (1010011010), Tomaž Hočevar (thocevar), Nikhil Garg, David Stolp (pieguy), Антон Лунёв (Anton_Lunyov), Witaliy Gerasymiw
Problem Tester: Hiroto Sekido (LayCurse)
It promises to deliver on an interesting set of algorithmic problems with prizes up for grabs.
The contest is open for all and those, who are interested, are requested to register in order to participate.