March Challenge 2020 Division 2
Ada Bishop 2, Lasers Everywhere, Lasers Everywhere Alternative, Pintu and Fruits, XOR Engine
April Challenge 2020 Division 2
Leaked Answers (Challenge), COVID Pandemic and Long Queue, Sell All the Cars, Unit GCD, Factor Tree, Ready Bitwise, Squared Subsequences, Strange Number
June Challenge 2020 Division 1
The Tom and Jerry Game!, Operations on a Tuple, The Delicious Cake, Convenient Airports, Perfect Partitions, Covid Sampling (Challenge), Danya and Different Values
September Challenge 2020 Division 1
Ada Matrix, Find XOR, Chefina and Swap, Chef and Trump Cards
October Challenge 2020 Division 1
Inversions, Positive AND, Replace for X
January Challenge 2021 Division 2
Chef and Ants, Expected Number of SCCs, Watching CPL, Fair Elections
December Challenge 2020 Division 1
Hail XOR, Positive Prefixes, Even Pair Sum
February Challenge 2021 Division 1
Team Name, XOR Sums, 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
China