July Challenge 2017
Whats in the Name, Chef and Sign Sequences
December Challenge 2017
Chef And his Cake, Penalty Shoot-out
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle
March Challenge 2018 DIV 2
Chef and Easy Problem, Chef and Glove, Mix the Colors, A Big Sale
June Challenge 2018 Division 2
Two Flowers, Binary Shuffle, Naive Chef
August Challenge 2018 Division 2
Modular GCD, Spell Bob, Sheokand and Number, Problem Sort
September Challenge 2018 Division 2
Magician versus Chef, War of XORs, Chef and Adventures
October Challenge 2018 Division 2
Minimize Digitsum, Chef and Serves, Byte to Bit
February Challenge 2019 Division 2
Chef and Secret Ingredients, Appy and Contest, Deputy Chef
April Challenge 2019 Division 2
Friend or Girlfriend, Maximum Remaining, Fencing
Canada