September Challenge 2013
Chef and Integers , CAO Stage-1, Cool Guys
October Challenge 2013
Little Elephant and Bamboo, Helping Lira, Maxim and Dividers, Yet Another Nice Girl, Edit Distance on Grid
February Challenge 2014
Longest Common Pattern, Little Elephant and Subarrays
March Challenge 2014
Walk, Mike and Stamps, Little Chef and Numbers, Binary Tournament, Team Split
April Challenge 2014
Sereja and Permutation, Counting Matrices, Farmer Feb, Chef and Digits, Divide the Tangerine, Shortest Path in Binary Trees
July Challenge 2014
Reach The Point, Dish Owner, Count Substrings, Chef and Frogs, Garden Game, Chef and Rectangle Genome
August Challenge 2014
The Leaking Robot, Chef and Gift
February Challenge 2015
Chef and Chain, Chef and Strange Formula, Chef and Strings, Let us play with rank list, Chef and Equality
May Challenge 2015
Set Difference , Chef and Cake, Chef and new recipe, Chef and Prime Divisors, Devu and binary String
June Challenge 2015
Steady tables, Chef and His Friend, Chef and Memory Limit, Chef and Polygons
July Challenge 2015
Bread, MasterChef, Na2a and lucky stone, Chef and Cube
July Challenge 2017
Chef and Sign Sequences, Whats in the Name
India