January Cook-Off 2015
Tojo hates probabilities, Suraj goes shopping
February Challenge 2015
Chef and Chain, Chef and Strings, Let us play with rank list, Chef and Equality
October Challenge 2015
Who dares to be a millionaire, Spheres, Count Subarrays
February Challenge 2016
Chef and Strange Operations
March Challenge 2016
Palindromic substrings, maximize the sum, Chef And Special Dishes
April Challenge 2016
Chef And Coloring, Chef And Magical Path, Fibonacci Queries, Help Watson Escape, Chef and Ballons
June Challenge 2016
Chef And The Hiring Event, Chef And Binary Operation, Chef and Coins Game, Devu and an Array
September Challenge 2016
Faded Palindromes, Chef and calculation, Chef and digits of a number, Chef and Friends
July Cook-Off 2016
Chef and Proportion, Chef and Numbers
April Challenge 2017
Bear and Row 01, Bear and Clique Distances
June Challenge 2017
Chef and Prime Queries, Pairwise union of sets
India