August Challenge 2018 Division 2
Modular GCD, Problem Sort, Spell Bob
November Challenge 2018 Division 2
Chef and Ridges, Chef and Difficult Contests, Chef and Happiness
August Challenge 2019 Division 2
Distribute Apples, Zombie and the Caves, Football, Dilemma
January Challenge 2020 Division 2
Chef and Dynamo, Doraemon, Equality, Chefina and Prefix Suffix Sums, Breaking Bricks
January Lunchtime 2020 Division 2
Bob and His Friends, Chef and Street Food, Under the Tunnels
