August Challenge 2019 Division 2
Encoding, Dilemma, Chef and Gordon Ramsay, Football, Distribute Apples, Zombie and the Caves, Guddu and his Mother
August Lunchtime 2019 Division 2
Eidi Gift, Destroy Cells, Chef and Trip, Chef Does Coke Yet Again
September Challenge 2019 Division 1
Fuzzy Linear Combinations, Chef and Interesting Subsequences , Chef Designed a Network, Doofish Set, Biladerim Icin, Easy Fibonacci, Chef and Good Subsequences
January Cook-Off 2020 Division 1
Profitable Paths, Range AND
February Cook-Off 2020 Division 1
Must Be Divisible, Maximum Subsequence Sum, XOR Game, Chef and Pepperoni Pizza Again
UWCOI 2020 (Rated for all)
Button Pairs, Base Plans, Find maximum in an Array, Mercury Poisoning
Russia