October Mega Cook-Off 2018 Division 2
Ada and the Staircase, Binary Nim 2
December Challenge 2018 Division 2
Chef and Interactive Contests, Chef and An Ideal Problem
August Lunchtime 2018 Division 2
Chef and Problem Setting, Chef and Eid
January Challenge 2019 Division 2
Lucky Number Game, Fancy Quotes, Distinct Pairs
April Challenge 2020 Division 2
Strange Number, COVID Pandemic and Long Queue, Leaked Answers (Challenge), Sell All the Cars, Unit GCD, Ready Bitwise, Squared Subsequences
July Challenge 2020 Division 2
Ada King, Chefina and Swaps, Missing a Point, Chef and Card Game, Chef and Strings
October Cook-Off 2020 Division 2
Split the Str Ing, Decreasing Srrnmieeda, Path-etic Sums
India