August Challenge 2016
Chef and Circle Run, Chef and Round Run, Chef and Chocolate
September Challenge 2016
Chef and Friends, Dividing Machine, Chef and Matrix Division, Chef and digits of a number, Faded Palindromes, JosephLand, Chef and calculation
October Challenge 2016
Chef and Keyboard, Big Queries, Fenwick Iterations, Chef and Three Dogs, Chef and Two String
November Challenge 2016
Count Permutations, Task for Alexey, Chef and squares, Gift and Chef, Friends Meeting
August Cook-Off 2016
Tweedle-Dee and Tweedle-Dum
January Challenge 2017
Capital Movement, Cats and Dogs, Reservior, Tourists in Mancunia
February Challenge 2017
Chef and his Best Friend, Chef and Triangles, Eugene and big number
April Challenge 2017
Chef and Divisor Tree, Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes
June Challenge 2017
Chef and Prime Queries, A Good Set, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets
July Challenge 2017
Tree Expectancy, IPC Trainers, Calculator , Whats in the Name, Pishty and tree, Chef and Sign Sequences
August Long Challenge 2017
Chef and Rainbow Array, Chef And Fibonacci Array, Chef and Mover, Palindromic Game, Greedy Candidates, Strings and Graphs
March Cook-Off 2017
Rainbow Graph, Safe Robot
India