September Challenge 2020 Division 2
A Problem on Sticks, Chef and Trump Cards, Find XOR, Ada Matrix, Chefina and Swap
October Challenge 2020 Division 2
Positive AND, Replace for X, Covid Run, Chef and Easy Queries
December Challenge 2020 Division 2
Vaccine Production, Vaccine Distribution, Even Pair Sum, Positive Prefixes, String Operations, Hail XOR
March Challenge 2021 Division 2
Interesting XOR!, College Life 4, Consecutive Adding, Paparazzi Gennady, Space Arrays, Wireless Electricity (Challenge)
May Challenge 2021 Division 2 (Rated)
Valid Paths, Tree House, An Interesting Sequence, Xor Equality, Tic Tac Toe, Modular Equation
India