June Challenge 2017
Chef and the Feast, Xenny and Coin Rankings, Triplets, A Good Set
October Cook-Off 2017
Chef and Counting Test, Chef and Employment Test, Chef and Weird Queries
June Cook-Off 2018 Division 2
Archi and Comparsion, Good Permutations
September Mega Cook-Off 2018 Division 2
ATM Machine, Make a Permutation
May Challenge 2018 Division 2
Mighty Friend, Dibs on Fibs, Fake Binary Search, Xor Again, Minimum Deletions
August Lunchtime 2018 Division 2
Chef and Problem Setting, Chef and Eid
ProCon Junior (Rated for Division 2)
Chef and Secret Ingredient, Chef and Bored Games, Chef and Cookies
Japan