May Challenge 2015
Chef and new recipe, Set Difference
June Challenge 2015
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
October Challenge 2015
Time measure, Spheres, Who dares to be a millionaire, Count Subarrays
November Challenge 2015
Eugene and function, Chef and cakes
December Challenge 2015
Chef and the stones, Plane Division
April Cook-Off 2015
Equality, Version Control System
February Challenge 2016
Chef and Strange Operations, Chef-Detective, Devu and a light discussion, Rectangles of Love
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Magical Path, Chef And Coloring
May Challenge 2016
Sereja and GCD 2, Chef and Balls, Forest Gathering, Laddu
September Challenge 2016
Chef and digits of a number, Chef and calculation, Faded Palindromes
December Challenge 2016
Train Partner, Our Base is Under Attack
January Challenge 2017
Capital Movement, Cats and Dogs, Reservior, Tourists in Mancunia
United States