March Challenge 2020 Division 2
Ada Bishop 2, XOR Engine, 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
May Challenge 2020 Division 2
Coronavirus Spread, Isolation Centers
May Cook-Off 2020 Division 2
Chef and Recipe, Roads in Chefland
April Lunchtime 2020 Division 2
Chef in Fantasy League, Another Birthday Present!
May Lunchtime 2020 Division 2
Weird Walk, Lost Weekends
June Challenge 2020 Division 2
Even Matrix, The Tom and Jerry Game!, Operations on a Tuple, Chef and Icecream, Covid Sampling (Challenge), Chef and String, Chef and Price Control
July Challenge 2020 Division 2
Chef and Strings, Chef and Card Game, Doctor Chef, Chefina and Swaps, Ada King, Missing a Point
August Challenge 2020 Division 1
Subsequence Frequency Counting, Smallest KMP, Chef and Wedding Arrangements
July Cook-Off 2020 Division 1
Even-tual Reduction, OR-thodox Distinction
January Challenge 2021 Division 2
Fair Elections, Watching CPL, Guess the Tiling, Chef and Ants, Expected Number of SCCs
December Challenge 2020 Division 1
Hail XOR, Calculus, String Operations, Positive Prefixes, Even Pair Sum
September Cook-Off 2021 Division 1
Chef and Pairwise Distances, Fake Swaps, Half Sequence
SnackDown 2021 - Online Round 1A
Yet Another Flipping Problem, Round Robin Ranks , Dance Moves, Equal Beauty, Min Max LCM
India