June Challenge 2018 Division 2
Vision, Sheokand and String, Binary Shuffle, Naive Chef, Two Flowers
July Challenge 2018 Division 2
Strike or Spare, No Strings Attached, Magic Set, Gears, No Minimum No Maximum, Reach Equilibrium
December Challenge 2018 Division 1
Max and Electrical Panel, Directing Edges
November Challenge 2018 Division 2
Chef and Difficult Contests, Chef and Happiness, Magician versus Chef 2, Appy Loves One, Chef and Ridges, Good Median
February Challenge 2019 Division 1
Chef and Secret Ingredients, Art of Balance
August Challenge 2019 Division 2
Distribute Apples, Zombie and the Caves, Football, Chef and Gordon Ramsay, Dilemma, Encoding, Guddu and his Mother
September Challenge 2019 Division 1
Biladerim Icin, Fuzzy Linear Combinations, Expected GCD, Doofish Set, Power Sum, Chef Designed a Network
December Challenge 2019 Division 1
Chefina and Ranges, Binary XOR, Sticky Notes
Taiwan