April Challenge 2019 Division 2
Subtree Removal, Fencing, Playing with Numbers
January Challenge 2020 Division 2
Chef and Dynamo, Doraemon
February Challenge 2020 Division 2
(Challenge) Raisins, Long Contest and Cook Off Overlaps
April Challenge 2020 Division 2
Strange Number, Ready Bitwise, Leaked Answers (Challenge)
September Challenge 2020 Division 2
Find XOR, Coronavirus Spread 2, Ada Matrix, Chef and Trump Cards, A Problem on Sticks, Chefina and Swap
October Challenge 2020 Division 2
Positive AND, Replace for X, Covid Run, Chef and Easy Queries
November Challenge 2020 Division 2
Restore Sequence, Ada and Dishes, Iron, Magnet and Wall
January Challenge 2021 Division 2
Watching CPL, Fair Elections
December Challenge 2020 Division 2
Positive Prefixes, Even Pair Sum, Vaccine Production, Vaccine Distribution
