May Challenge 2015
Chef and Prime Divisors, Set Difference , Chef and new recipe, Chef and Cake, Devu and binary String
June Challenge 2015
Sereja and Matrix Division, Steady tables, Chef and His Friend, Chef and Memory Limit, Chef and Polygons, Anticommutative implication, Chef and String
May Cook-Off 2015
Devu and friendship testing
March Challenge 2016
Chef and Number Guessing, Chef And Special Dishes, maximize the sum, Chef And Hungry Birds, Sereja and Two Strings 2, Palindromic substrings
April Challenge 2016
Help Watson Escape, Fibonacci Queries, Chef and Ballons, Chef And Magical Path, Chef And Coloring
June Challenge 2016
Chef And The Hiring Event, Devu and an Array, Chef and Coins Game, Chef And Binary Operation, Chef and Array and K, Chef and New Game
India