January Challenge 2020 Division 2
Doraemon, Breaking Bricks, Chef and Dynamo
April Challenge 2020 Division 2
COVID Pandemic and Long Queue
October Challenge 2020 Division 2
Positive AND, Covid Run, Chef and Easy Queries
November Challenge 2020 Division 2
Magical Candy Store, Iron, Magnet and Wall, Ada and Dishes, Restore Sequence
January Challenge 2021 Division 2
Guess the Tiling, Expected Number of SCCs, Watching CPL, Fair Elections
December Challenge 2020 Division 2
Vaccine Distribution, Vaccine Production, Even Pair Sum, String Operations, Hail XOR, Positive Prefixes
December Cook-Off 2020 Division 1
Self-Destructing Strings, Circle of Chaos
December Lunchtime 2020 Division 1 (Unrated)
Three Letters, One Zero Swaps
January Lunchtime 2021 Division 1 (Unrated)
Good Grid, Dreams of Divisibility, Even Sum
February Challenge 2021 Division 1
Team Name, Multiple Games, Prime Game, Another Tree with Number Theory
March Challenge 2021 Division 1
Dense Graph, Consecutive Adding, Paparazzi Gennady, Space Arrays, Maximum Topological Sort
April Challenge 2021 Division 1
Binary String MEX, Worthy Matrix, Chef and Dice
India