April Challenge 2014
Chef and Digits, Shortest Path in Binary Trees, Farmer Feb
May Challenge 2014
Compilers and Parsers, Chef-jumping
July Challenge 2014
Count Substrings, Reach The Point
August Challenge 2014
The Leaking Robot, Chef and Gift
September Challenge 2014
Chef and Rainbow Array - 2, Fun with Rotation, Chef and sequence, Chef and Left-Right
October Challenge 2014
Remy paints the fence, Chef and Ground, Chef and Square, Magical Girl and Colored Liquid Potions
December Challenge 2014
Chef and Apple Trees, XOR with Subset, Chef Under Pressure, Chef and Bracket-Pairs
January Challenge 2015
Queries on the String, Chef and A Large Permutation, Chef and Stones, Sereja and Votes, One Dimensional Kingdoms, Gcd Queries
February Challenge 2015
Let us play with rank list, Chef and Equality, Chef and Strange Formula, Chef and Chain
April Challenge 2015
Chef and Interview, Broken Telephone, Chef and Piano Scales
August Challenge 2015
Gravity Guy, Cooking Machine, Aditi and Magic Trick
September Challenge 2015
Chain of Doughnuts, Count Steps in Matrix
India