February Challenge 2017
Chef and His Apartment Dues
March Challenge 2017
Xenny and Alternating Tasks, Bandwidth of a matrix, Bear and Extra Number
April Challenge 2017
Dish Of Life, Bear and Row 01, Similar Dishes
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
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
November Challenge 2017
Villages and Tribes, Periodic Palindrome Construction, Chef Hates Palindromes, Chef and Intersection Line, Chef goes Left Right Left
December Lunchtime 2017
Days in Month, Strange Function
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers
February Challenge 2018
Chef And His Characters, Permutation and Palindrome, Car-pal Tunnel, Chef And The Patents
June Cook-Off 2018 Division 2
Archi and Comparsion, Good Permutations
September Lunchtime 2018 Division 2
Judging Delay, Chef Restaurant
India