October Challenge 2015
Count Subarrays, Who dares to be a millionaire
January Long Challenge 2016
Chef and Time Machine, Devu and Perfume, Churu and Balls, Rupsa and the Game
February Challenge 2016
Devu and a light discussion, Rectangles of Love, Chef-Detective
March Challenge 2016
Palindromic substrings, maximize the sum, Chef And Special Dishes
April Challenge 2016
Help Watson Escape, Chef And Coloring, Chef And Magical Path, Chef and Ballons, Fibonacci Queries
May Challenge 2016
Chef and Balls, Forest Gathering, Chef and Big Soccer, Laddu
July Challenge 2016
Andrash and Stipendium, Chef and Tetris, Chef and Robots Competition, Chefland and Electricity
August Challenge 2016
Chef and Chocolate, Chef and Round Run
June Challenge 2017
A Good Set, Xenny and Coin Rankings
India