December Challenge 2020 Division 2
Vaccine Distribution, Vaccine Production
January Challenge 2021 Division 3
Chef and Division 3, Encoded String
February Challenge 2021 Division 3
Maximise Function, Highest Divisor
March Challenge 2021 Division 3
Chef and Groups, No Time to Wait, Space Arrays, Interesting XOR!
May Challenge 2021 Division 3 (Rated)
Xor Equality, Golf, Solubility
June Challenge 2021 Division 3 (Rated)
Bitwise Tuples, Summer Heat, Bella ciao
July Challenge 2021 Division 3 (Rated)
Maximum Production, Relativity
October Lunchtime 2021 Division 3
Alternating Work Days, Exactly N plus 1 Values, Problem Category
November Challenge 2021 Division 3 (Rated)
Weird Palindrome Making, Equal Coins, Which Fuel is Cheaper
December Challenge 2021 Division 3 (Rated)
Check Mate, Valleys and Hills, List of Lists, Utkarsh and Placement tests
India