January Challenge 2019 Division 2
Lucky Number Game, Distinct Pairs, Chef and Modulo Game, Fancy Quotes, A Pizza Slice, Different Neighbours
March Challenge 2019 Division 2
Chef got Recipes, Chef and Number Game, Yet Again a Subarray Problem, Chef and a Beautiful Digit
April Challenge 2019 Division 2
Subtree Removal, Fencing, Maximum Remaining, Friend or Girlfriend, Playing with Numbers
June Challenge 2019 Division 2
Road Signs, Chef and Proxy, Lent Money, Guddu on a Date, Chef and Ingredients, Sum and GCD
June Cook-Off 2019 Division 1
Ants and Anteaters, Drink Slush
August Challenge 2019 Division 1
Guddu and his Mother, Encoding, Dilemma, Maximize an Expression
India