August Challenge 2014
Chef and Reversing, The Leaking Robot, Cleaning Tables, Chef and Gift
October Challenge 2014
Chef and Ground, Magical Girl and Colored Liquid Potions
November Challenge 2014
Distinct Characters Subsequence, Let us construct palindrome
January Challenge 2015
Chef and Stones, Sereja and Votes, Gcd Queries
February Challenge 2015
Chef and Chain, Let us play with rank list, Chef and Equality
April Challenge 2015
Chef and Interview, Broken Telephone, Chef and Piano Scales
July Lunchtime 2015
Greedy puppy, Puppy and game
India