September Challenge 2018 Division 2
War of XORs, Magician versus Chef, Bad Shuffle, Chef and Adventures
November Challenge 2018 Division 2
Chef and Difficult Contests, Chef and Happiness
October Challenge 2018 Division 2
Minimize Digitsum, Chef and Serves, Byte to Bit
January Challenge 2019 Division 2
Fancy Quotes, Chef and Modulo Game, Distinct Pairs, Lucky Number Game
February Challenge 2019 Division 2
Manhattan Rectangle, Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, Art of Balance, Deputy Chef
February Cook-Off 2019 Division 2
Buying New Tablet, Chef and Party
March Challenge 2019 Division 2
Chef and a Beautiful Digit, Yet Again a Subarray Problem, Chef got Recipes, Chef and Number Game
April Challenge 2019 Division 2
Friend or Girlfriend, Maximum Remaining, Fencing
April Cook-Off 2019 Division 2
Pied Piper vs Hooli, Making a Meal, Chef Learning Hungarian Algorithm
April Lunchtime 2019 Division 2
Attendance, Fast Food, Minimum Sum
June Challenge 2019 Division 1
Chef and Ingredients, Sum and GCD
April Challenge 2020 Division 1
Strange Number, Squared Subsequences, Ready Bitwise, Factor Tree, Leaked Answers (Challenge)
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