August Challenge 2015
Social Cluster, Gravity Guy, Devu And Churu , Cooking Machine, Aditi and Magic Trick, Chef and insomnia, Chef and Path, Way Out
October Challenge 2015
Rupsa and Equilateral Triangle
January Long Challenge 2016
Rupsa and the Game, Churu and Balls, Chef and Time Machine, Devu and Perfume
February Challenge 2016
Chef and Strange Operations, Matrix Maximum Sum, Chef-Detective, Rectangles of Love, Devu and a light discussion, Sereja and Two Lines
March Challenge 2016
Palindromic substrings, maximize the sum, Chef And Special Dishes
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Magical Path, Chef And Coloring
August Challenge 2016
Chef and Circle Run, A Good Problem, Funny gnomes, Chef and Chocolate, Chef and Round Run
September Challenge 2016
Chef and digits of a number, Faded Palindromes
October Challenge 2016
Chef and Keyboard, Fenwick Iterations, Chef and Three Dogs
December Challenge 2016
Train Partner, Kth Max Subarray, Kirito in labyrinth, Roses for Alexey, Our Base is Under Attack
February Cook-Off 2016
Puppy and Palindromes, Puppy and Sum, Puppy and Board, Puppy and Catchers
August Cook-Off 2016
Tweedle-Dee and Tweedle-Dum
March Lunchtime 2016
Simple Statistics, ABABAABA
February Challenge 2017
Chef and Yoda, Chef and Triangles, Chef and his Best Friend, Chef and His Apartment Dues, Most Frequent Element, Gerrymander
Japan