January Challenge 2019 Division 2
Different Neighbours, Yet Another Problem About Sequences, A Pizza Slice, Fancy Quotes, Chef and Modulo Game, Distinct Pairs, Lucky Number Game
February Challenge 2019 Division 2
Manhattan Rectangle, 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
March Cook-Off 2019 Division 1
XOR N-bonacci Sequence, Markers and Caps
April Challenge 2019 Division 1
Moving Rectangles (Challenge), Subtree Removal, Playing with Numbers, Kira Loves Palindromes, Offer for Chef, Mininum XOR over Tree
June Challenge 2019 Division 1
Lent Money, Chef and Ingredients, Intersecting Paths, Sum and GCD, (Challenge) SnackDown 99
July Challenge 2019 Division 1
Codechef War, (Challenge) Codechef War II, Circular Merging, Guess the Prime!, Hit the Coconuts
August Challenge 2019 Division 1
Guddu and his Mother, Encoding, Dilemma, Maximize an Expression, Chef and Gordon Ramsay, Football, Distribute Apples, Zombie and the Caves
India