February Challenge 2019 Division 2
Guess It Right, Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, (Challenge) Chef with Orchestra in the Kitchen, Art of Balance, Deputy Chef, Manhattan Rectangle
March Challenge 2019 Division 2
Chef and a Beautiful Digit, (Challenge) Interleaving Strings, Yet Again a Subarray Problem, Chef and Number Game, Cheating on Queue, Chef got Recipes, Chef and Soccer
April Challenge 2019 Division 1
Offer for Chef, Kira Loves Palindromes, Mininum XOR over Tree, Playing with Numbers, Subtree Removal
May Challenge 2019 Division 1
Ada Rooks 2, Where to Build the Roads
July Challenge 2019 Division 1
Hit the Coconuts, Guess the Prime!, Codechef War, Circular Merging
China