April Challenge 2016
Help Watson Escape, Chef And Coloring, Chef and Ballons, Chef And Magical Path
June Challenge 2016
Chef And The Hiring Event, Chef and Array and K, Chef And Binary Operation, Chef and Coins Game, Devu and an Array
July Challenge 2016
Andrash and Stipendium, Chef and Tetris, Chefland and Electricity
October Challenge 2016
Fenwick Iterations, Chef and Three Dogs, Chef and Keyboard, Sereja and Progressions
January Challenge 2017
Capital Movement, Cats and Dogs, Reservior
February Challenge 2017
Chef and Triangles, Chef and His Apartment Dues, Most Frequent Element, Gerrymander
March Challenge 2017
Bandwidth of a matrix, (CH) Bear and Sorted Rows, Bear and Extra Number, Xenny and Alternating Tasks, Cooking Schedule, Pishty and birthday
April Challenge 2017
(CH) Serejs and Billiards, Chef and Divisor Tree, Stable market, Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes
June Challenge 2017
Chef and the Feast, Pairwise union of sets, Triplets, Xenny and Coin Rankings, A Good Set, Saboteur (Challenge), Chef and Prime Queries
August Long Challenge 2017
Chef and Rainbow Array, Chef And Fibonacci Array, Chef and Mover, Palindromic Game, Greedy Candidates, Strings and Graphs
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Fill The Matrix, Little Chef and Sums
India