December Challenge 2017
Penalty Shoot-out, Chef And his Cake
January Lunchtime 2018
Chef and Game with Sequence
February Challenge 2018
Chef And His Characters, Chef And The Patents, Permutation and Palindrome
March Challenge 2018 DIV 2
A Big Sale, Chef and Glove
September Mega Cook-Off 2018 Division 2
ATM Machine, Make a Permutation
September Challenge 2018 Division 2
Magician versus Chef, Bad Shuffle, Chef and Adventures, War of XORs
October Challenge 2018 Division 2
Beautiful Bricks, Minimize Digitsum, Chef and Serves, Byte to Bit
April Challenge 2019 Division 2
Friend or Girlfriend, Maximum Remaining, Fencing
