September Challenge 2018 Division 2
War of XORs, Chef and Adventures, Bad Shuffle, Magician versus Chef
October Challenge 2018 Division 2
Appy and Balloons , 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
Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, Art of Balance, Deputy Chef
February Cook-Off 2019 Division 2
Chef and Secret Password, Buying New Tablet, Chef and Party
March Challenge 2019 Division 2
Chef got Recipes, Chef and a Beautiful Digit, Chef and Number Game, Yet Again a Subarray Problem
April Challenge 2019 Division 2
Playing with Numbers, Friend or Girlfriend, Maximum Remaining, Subtree Removal, Fencing
April Cook-Off 2019 Division 2
Making a Meal, Chef Learning Hungarian Algorithm
May Cook-Off 2019 Division 2
Misha and Nice Sets, Recover the Sequence, Chain Reaction
September Lunchtime 2019 Division 1
All Substrings, Find the Sum
October Challenge 2019 Division 1
Even Edges, Chef and Maximum Star Value, Array Modification
Alkhwarizm (Rated for all)
Weirwood Trees, Danny Wants To Know
India