September Challenge 2018 Division 2
War of XORs, Magician versus Chef, Chef and Adventures
December Challenge 2018 Division 2
Max and Electrical Panel, Chef and Interactive Contests, Chef and An Ideal Problem
November Challenge 2018 Division 2
Chef and Ridges, Appy Loves One, Chef and Difficult Contests, Chef and Happiness
October Challenge 2018 Division 2
Chef and Serves, Byte to Bit
January Challenge 2019 Division 2
Lucky Number Game, Fancy Quotes, Chef and Modulo Game, Distinct Pairs, Different Neighbours
March Challenge 2019 Division 2
Chef got Recipes, Chef and Number Game, Chef and a Beautiful Digit
April Challenge 2019 Division 2
Friend or Girlfriend, Maximum Remaining, Fencing
July Challenge 2019 Division 2
Minimum and Maximum, Chef and Mean
August Challenge 2019 Division 2
Dilemma, Football, Distribute Apples, Zombie and the Caves
October Challenge 2019 Division 2
Chef and Maximum Star Value, Array Modification, Operations on a Matrix, Phone Prices
January Challenge 2020 Division 2
Breaking Bricks, Doraemon, Chef and Dynamo
April Challenge 2020 Division 2
Strange Number, Sell All the Cars, COVID Pandemic and Long Queue
May Challenge 2020 Division 2
Coronavirus Spread, Isolation Centers
March Challenge 2021 Division 3
Interesting XOR!, Chef and Groups, College Life 4, Consecutive Adding, Paparazzi Gennady, Space Arrays, No Time to Wait
July Lunchtime 2021 Division 2
Beautiful Pairs, Array Rotation Returns
India