January Challenge 2019 Division 2
Lucky Number Game, Different Neighbours, Fancy Quotes, Chef and Modulo Game, Distinct Pairs
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 Challenge 2019 Division 2
Chef got Recipes, Chef and Number Game, Chef and a Beautiful Digit
March Cook-Off 2019 Division 2
UEFA Champions League, XOR N-bonacci Sequence
March Lunchtime 2019 Division 2
Testing Robot, Pogo Stick Competition
April Challenge 2019 Division 2
Fencing, Subtree Removal, Maximum Remaining, Friend or Girlfriend, Playing with Numbers
April Cook-Off 2019 Division 2
Making a Meal, Chef Learning Hungarian Algorithm
Code Melange (Rated for all)
Greg and Grid, A Small Array, Go Round, Max power
United States