May Challenge 2020 Division 2
Isolation Centers, Coronavirus Spread
June Challenge 2020 Division 2
The Tom and Jerry Game!, Operations on a Tuple, Chef and Icecream, Covid Sampling (Challenge), Chef and String, Chef and Price Control, Even Matrix
July Challenge 2020 Division 2
Ada King, Chefina and Swaps, Missing a Point, Doctor Chef, Chef and Card Game, Chef and Strings
August Challenge 2020 Division 2
Insanely Hard School Exams, Chef and Wedding Arrangements, Smallest KMP, Chef and Linear Chess, Another Card Game Problem, Chef Wars - Return of the Jedi
July Cook-Off 2020 Division 2
Even-tual Reduction, OR-thodox Distinction
July Lunchtime 2020 Division 2
Chef and Steps, Maximum Candies
June Lunchtime 2020 Division 2
Chef and Demonetisation, Increasing Decreasing
December Challenge 2020 Division 1
Positive Prefixes, Even Pair Sum, Hail XOR
December Cook-Off 2020 Division 2
Self-Destructing Strings, Catch the Thief, Minimum Attendance Requirement
January Lunchtime 2021 Division 3 (Unrated)
Ashishgup and Interviews, Pair Me, Dreams of Divisibility, Binary Subsequence, Even Differences, Even Sum
February Challenge 2021 Division 3
Frog Sort, Highest Divisor, Maximise Function, Prime Game, Chef and Meetings, Team Name
March Cook-Off 2021 Division 2
Matrix XOR, Guess the Number
March Challenge 2021 Division 2
Interesting XOR!, College Life 4, Space Arrays
December Lunchtime 2021 Division 2
Maximum Trio, Romantic Reversals
India