October Challenge 2016
Chef and Three Dogs, Chef and Keyboard
November Challenge 2016
Task for Alexey, Chef and squares
February Challenge 2017
Chef and His Apartment Dues
March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number, Bandwidth of a matrix
April Challenge 2017
Bear and Row 01, Similar Dishes, Bear and Clique Distances, Dish Of Life
May Challenge 2017
Chef and Sub Array , Chef and his daily routine, Courses in an university, Blocked websites, Median of adjacent maximum numbers, Chef and Subsequences
July Challenge 2017
Chef and Sign Sequences, Whats in the Name
October Challenge 2017
Max Mex, Counter Test For CHEFSUM, A Balanced Contest
November Challenge 2017
Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
December Challenge 2017
Chef And Easy Xor Queries, Chef and Hamming Distance of arrays, Penalty Shoot-out, Chef And his Cake, Total Diamonds
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle
February Challenge 2018
Chef And His Characters, Permutation and Palindrome
June Challenge 2018 Division 2
Sheokand and String, Binary Shuffle, Naive Chef
Kyrgyzstan