March Challenge 2016
Palindromic substrings, Chef And Special Dishes, maximize the sum
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Magical Path, Chef And Coloring
June Challenge 2016
Chef And The Hiring Event, Chef And Binary Operation, Chef and Coins Game, Devu and an Array
August Challenge 2016
Chef and Circle Run, Chef and Round Run, Chef and Chocolate
September Challenge 2016
Chef and Friends, Dividing Machine, Chef and digits of a number, Faded Palindromes, Chef and calculation
November Challenge 2016
Count Permutations, Gift and Chef, Chef and squares, Task for Alexey
October Cook-Off 2016
ChefWatson uses Social Network, Watson asks Does Permutation Exist
February Challenge 2017
Chef and Triangles, Chef and His Apartment Dues, Most Frequent Element, Gerrymander
April Challenge 2017
Chef and Divisor Tree, Stable market, Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes
May Challenge 2017
Chef and his daily routine, Chef and Subsequences, Median of adjacent maximum numbers, Blocked websites, Courses in an university, Chef and Sub Array
June Challenge 2017
Chef and Prime Queries, A Good Set, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets
March Cook-Off 2017
Rainbow Graph, Safe Robot
India