March Challenge 2019 Division 2
Chef and Number Game, Yet Again a Subarray Problem, Chef and a Beautiful Digit, Chef got Recipes
April Challenge 2019 Division 2
Fencing, Subtree Removal, Maximum Remaining, Friend or Girlfriend, Playing with Numbers, Kira Loves Palindromes
July Challenge 2019 Division 2
Guess the Prime!, Parity Again, Circular Merging, Minimum and Maximum, Chef and Mean
November Challenge 2019 Division 2
Physical Exercise, Chef and Minimum Colouring, Weapon Value, From Zero to Infinity, Smallest Beautiful Number, Hard Sequence
February Challenge 2020 Division 1
Chef and Railway Stations, Expected Change, No Change Required, Chef and Gordon Ramsay 2, (Challenge) Raisins, Long Contest and Cook Off Overlaps
October Challenge 2021 Division 2 (Unrated)
Longest AND Subarray, MEX-OR, Yet another MEX problem
