February Challenge 2019 Division 2
Chef and Secret Ingredients, Chef and Magical Jars, Deputy Chef, Art of Balance, Appy and Contest
February Cook-Off 2019 Division 2
Buying New Tablet, Chef and Party
March Challenge 2019 Division 2
Chef got Recipes, Chef and Number Game, Yet Again a Subarray Problem, Chef and a Beautiful Digit
July Challenge 2019 Division 2
Parity Again, Minimum and Maximum, Chef and Mean
November Challenge 2019 Division 2
Chef and Minimum Colouring, Weapon Value, From Zero to Infinity, Hard Sequence, Physical Exercise, Smallest Beautiful Number
May Lunchtime 2020 Division 1
Convert the String, Tree difference
September Challenge 2020 Division 1
Chefina and Swap, Find XOR, Ada Matrix
July Cook-Off 2020 Division 1
OR-thodox Distinction, Path-etic Products, Even-tual Reduction
June Cook-Off 2020 Division 1
Per Capita Income, Checkpoints
December Lunchtime 2020 Division 1 (Unrated)
Even Sequence, Three Letters, One Zero Swaps
September Lunchtime 2020 Division 1
Root the Tree, Robot Detector
Belarus