March Challenge 2016
maximize the sum, Palindromic substrings
April Challenge 2016
Chef and Ballons, Chef And Magical Path, Chef And Coloring, Help Watson Escape
August Challenge 2016
Chef and Chocolate, Chef and Round Run
September Challenge 2016
Chef and digits of a number, Faded Palindromes
October Challenge 2016
Chef and Keyboard, Chef and Three Dogs, Fenwick Iterations
November Challenge 2016
Count Permutations, Chef and squares, Task for Alexey
October Cook-Off 2016
Watson asks Does Permutation Exist, ChefWatson uses Social Network
July Lunchtime 2016
Drumpf for President!, Lumpy - The Bus Driver
January Challenge 2017
Cats and Dogs, Reservior, Tourists in Mancunia, Capital Movement
February Challenge 2017
Chef and Triangles, Chef and His Apartment Dues
March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number, Bandwidth of a matrix
January Cook-Off 2017
Digit Longest Increasing Subsequences 2
May Challenge 2017
Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers
June Challenge 2017
A Good Set, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets
India