June Challenge 2018 Division 2
Naive Chef, Sheokand and String
December Challenge 2018 Division 1
(Challenge) Delete DAG, Max and Electrical Panel, Directing Edges, Chef and Interactive XOR
November Challenge 2018 Division 2
Chef and Happiness, Chef and Difficult Contests, Magician versus Chef 2, Good Median, Appy Loves One, Chef and Ridges, Chef, Primes and Trees (Challenge)
October Challenge 2018 Division 2
Minimize Digitsum, Chef and Serves, Byte to Bit
January Challenge 2019 Division 1
Different Neighbours, A Pizza Slice, Distinct Pairs, Partition the Graph, Yet Another Problem About Sequences
February Challenge 2019 Division 1
Manhattan Rectangle, Chef and Secret Ingredients, Art of Balance
April Challenge 2019 Division 1
Offer for Chef, Subtree Removal, Kira Loves Palindromes, Playing with Numbers
September Challenge 2019 Division 1
Biladerim Icin, Fuzzy Linear Combinations, Expected GCD, Doofish Set, Power Sum, Chef Designed a Network, (Challenge) Sebi and CPU Design
December Challenge 2019 Division 1
Addition, Binary XOR, Chefina and Ranges
April Challenge 2020 Division 1
Strange Number, Squared Subsequences, Perfect Power Divisors, Ready Bitwise, Factor Tree, Leaked Answers (Challenge)
RECode 12.0 (Rated for all)
Chef and String, Chef and Walk, Chef and Rotation, Chef and Subsequences, Chef and Numbers
United States