September Challenge 2012
Racing Horses, Kisses & Hugs
October Challenge 2014
Remy paints the fence, Chef and Ground, Chef and Square, Magical Girl and Colored Liquid Potions, DevuLand, Dinosaurs and Laddus
November Challenge 2014
Distinct Characters Subsequence, Let us construct palindrome, Chef and Segment Game
December Challenge 2014
XOR with Subset, Chef and Apple Trees
January Challenge 2015
Sereja and Number Division 2, Gcd Queries, One Dimensional Kingdoms, Sereja and Votes, Chef and Stones, Chef and A Large Permutation
February Challenge 2015
Chef and Chain, Chef and Strange Formula, Let us play with rank list, Chef and Equality
August Challenge 2015
Way Out, Gravity Guy, Cooking Machine, Aditi and Magic Trick
India