August Challenge 2018 Division 2
Spell Bob, Sheokand and Number
December Challenge 2018 Division 2
Max and Electrical Panel, Chef and Interactive XOR, Chef and Interactive Contests, Chef and An Ideal Problem
October Challenge 2018 Division 2
Chef and Serves, Byte to Bit
August Lunchtime 2018 Division 2
Chef and Problem Setting, Chef and Eid
January Challenge 2019 Division 2
Lucky Number Game, Distinct Pairs, Chef and Modulo Game, Fancy Quotes
June Challenge 2020 Division 2
Even Matrix, Chef and Price Control, Chef and String, Chef and Icecream, The Tom and Jerry Game!
July Challenge 2020 Division 2
Ada King, Missing a Point, Chef and Card Game, Chef and Strings
December Challenge 2020 Division 2
Hail XOR, Positive Prefixes, Even Pair Sum, Vaccine Production, Vaccine Distribution
India