February Challenge 2020 Division 2
School of Geometry, The Theatre Problem, Hard Cash
March Challenge 2020 Division 2
XOR Engine, Ada Bishop 2, Pintu and Fruits
April Challenge 2020 Division 2
Strange Number, Squared Subsequences, Unit GCD, Sell All the Cars, Leaked Answers (Challenge), COVID Pandemic and Long Queue
January Lunchtime 2020 Division 2
Bob and His Friends, Chef and Street Food
June Challenge 2020 Division 2
Chef and Price Control, Chef and String, Covid Sampling (Challenge), The Tom and Jerry Game!, Even Matrix, Chef and Icecream
August Challenge 2020 Division 2
Chef Wars - Return of the Jedi, Another Card Game Problem, Chef and Linear Chess
February Challenge 2021 Division 3
Highest Divisor, Maximise Function, XOR Sums, Multiple Games, Prime Game, Chef and Meetings, Another Tree with Number Theory, Team Name, Frog Sort
India