April Challenge 2017
Bear and Random Grid, Chef and Divisor Tree, Stable market, Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes, Chef and Digits
May Challenge 2017
Median of adjacent maximum numbers, Chef and Subsequences, Blocked websites, Courses in an university, Chef and his daily routine, Gotham PD, Chef and Sub Array
June Challenge 2017
Chef and Prime Queries, Saboteur (Challenge), A Good Set, Cloning, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets
October Challenge 2017
Counter Test For CHEFSUM, A Balanced Contest, Max Mex, Chef and a great voluntary Program, Chef and Magic Arrays, Chef and Cycled Cycles
November Challenge 2017
Chef Hates Palindromes, Chef and Subarray Queries, Chef goes Left Right Left, Lovers Gift, Periodic Palindrome Construction, Villages and Tribes
June Lunchtime 2017
Company Club Membership, Maximum Unique Segment, Two Numbers, Company and Club Hierarchies
International Coding League (Rated)
Worst Case Analysis, Cards Game
February Challenge 2018
Broken Clock, Chef And His Characters, Chef And The Patents, Car-pal Tunnel, Permutation and Palindrome
April Cook-off 2018 Division 1
Run Direction, Cut the Board, Binary Nim, Pawn Chess
April Lunchtime 2018 Division 1
The hardest gcd problem, Triple-tree decomposition, Solve what you want, Fast forward travelling
Indonesia