December Challenge 2018 Division 2
Chef and Interactive Contests, Max and Electrical Panel, Chef and An Ideal Problem
January Challenge 2019 Division 2
Different Neighbours, Lucky Number Game, Distinct Pairs, Chef and Modulo Game, Fancy Quotes, A Pizza Slice
February Challenge 2019 Division 2
Appy and Contest, Deputy Chef, Art of Balance, (Challenge) Chef with Orchestra in the Kitchen, Chef and Secret Ingredients, Chef and Magical Jars, Guess It Right, Manhattan Rectangle
March Challenge 2019 Division 2
Chef and Number Game, Chef and a Beautiful Digit
April Challenge 2019 Division 2
Friend or Girlfriend, Maximum Remaining, Fencing
May Lunchtime 2019 Division 2 (Unrated)
CV, Reverse Maximisation, Dummy Palindromic Strings
June Challenge 2019 Division 2
Road Signs, Chef and Proxy, Guddu on a Date, Chef and Ingredients, Sum and GCD
August Challenge 2019 Division 2
Guddu and his Mother, Dilemma, Football, Distribute Apples, Zombie and the Caves
September Challenge 2019 Division 2
Chef and Good Subsequences, Chef and Interesting Subsequences , Chef Designed a Network, Easy Fibonacci
February Challenge 2020 Division 1
Chef and Railway Stations, Expected Change, No Change Required, The Theatre Problem, School of Geometry, Hard Cash, (Challenge) Raisins, Long Contest and Cook Off Overlaps
India