June Challenge 2015
Chef and His Friend, Steady tables, Chef and String, Chef and Memory Limit, Chef and Polygons
July Challenge 2015
Bread, MasterChef, Na2a and lucky stone, Chef and Cube
August Challenge 2015
Way Out, Gravity Guy, Cooking Machine, Aditi and Magic Trick, Chef and insomnia
September Challenge 2015
Nikitosh and xor, Cracking the Code, Lighthouses, Bank robbery, Count Steps in Matrix, Chain of Doughnuts
October Challenge 2015
Time measure, Count Subarrays, Who dares to be a millionaire, Spheres, Rupsa and Equilateral Triangle
November Challenge 2015
Eugene and function, Chef and cakes
July Lunchtime 2015
Greedy puppy, Puppy and game
August Lunchtime 2015
Churu and lost string, Minimum Maximum
January Long Challenge 2016
Chef and Inflation, Rupsa and the Game, Churu and Balls, Chef and Time Machine, Devu and Perfume
February Challenge 2016
Rectangles of Love, Chef-Detective, Devu and a light discussion, Chef and Strange Operations, Sereja and Two Lines
March Challenge 2016
Palindromic substrings, maximize the sum, Chef And Special Dishes
April Challenge 2016
Chef and Ballons, Chef And Magical Path, Chef And Coloring
July Challenge 2016
Andrash and Stipendium, Chef and Segments, Chef and Tetris, Chef and Robots Competition, Chefland and Electricity
United States