July Challenge 2017
Pishty and tree, Tree Expectancy, Whats in the Name, Calculator , IPC Trainers, Two Coins, Chef and Sign Sequences
August Long Challenge 2017
Chef and Rainbow Array, Greedy Candidates
March Challenge 2018 DIV 2
Chef and Glove, Minion Chef and Bananas, Minions and Voting, Mix the Colors, A Big Sale, Chef and Easy Problem, Pishty and Triangles
May Challenge 2018 Division 1
Fake Binary Search, Dibs on Fibs
Coders' Legacy (Rated for all)
Chef vs Doof, Doof on Cartesian, Doof fires Brackets, Jeremy gets a gift, Perry learns Binary, Unique Substring
Bangladesh