December Challenge 2018 Division 2
Chef and An Ideal Problem, Chef and Interactive Contests
November Challenge 2018 Division 2
Chef and Difficult Contests
January Challenge 2019 Division 2
Lucky Number Game, Fancy Quotes
February Challenge 2019 Division 2
Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, Deputy Chef
February Cook-Off 2019 Division 2
Buying New Tablet, Chef and Party
March Challenge 2019 Division 2
Chef and Number Game, Chef and a Beautiful Digit
April Challenge 2019 Division 2
Fencing, Friend or Girlfriend, Maximum Remaining
June Challenge 2019 Division 2
Road Signs, Chef and Proxy, Guddu on a Date, Sum and GCD
July Challenge 2019 Division 2
Minimum and Maximum, Chef and Mean
September Challenge 2019 Division 2
Easy Fibonacci, Chef and Interesting Subsequences
October Challenge 2019 Division 2
Missing Number, Chef and Maximum Star Value, Array Modification, Operations on a Matrix, Phone Prices
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