February 2012 Challenge
Lucky Count, Lucky Long, Word Couting, Count of Maximum
March 2012 Challenge
Longest Weird Subsequence, Free Shuttle Service, Home Delivery, Spoon in Matrix, Xor it
April Challenge 2012
Fit to Play, Similar Graphs, Greatest Dumpling Fight, Stacking Pancakes, Double Strings, Parallel Computing
June Challenge 2012
Little Elephant and Candies, Arranging Cup-cakes
June Challenge 2015
Chef and His Friend, Chef and Memory Limit, Chef and Polygons
India