April Challenge 2015
Count Sequences, Chef and Interview, Broken Telephone, Chef and Piano Scales
May Challenge 2015
Devu and binary String, Chef and Prime Divisors, Set Difference , Chef and new recipe
June Challenge 2015
Chef and Memory Limit, Chef and Polygons, Chef and His Friend
July Challenge 2015
Bread, Na2a and lucky stone, Chef and Cube, Rohith and Circles
December Challenge 2015
Chef and the stones, Plane Division
March Challenge 2016
Palindromic substrings, maximize the sum
India