September Challenge 2019 Division 2
Easy Fibonacci, Biladerim Icin, Fuzzy Linear Combinations, Chef Designed a Network, Chef and Interesting Subsequences , Chef and Good Subsequences
November Challenge 2019 Division 2
Physical Exercise, Hard Sequence, Smallest Beautiful Number, From Zero to Infinity, A Simple Game, Weapon Value, Chef and Minimum Colouring
February Cook-Off 2020 Division 1
Maximum Subsequence Sum, Chef and Pepperoni Pizza Again, XOR Game
April Cook-Off 2020 Division 1
Simple Operations, Inversions in Permutations
May Cook-Off 2020 Division 1
Chef, Chefina and Their Friendship, Roads in Chefland
June Cook-Off 2020 Division 1
Per Capita Income, Checkpoints, Banned Quotient
April Cook-Off 2021 Division 1
Tree Distances, OR of ANDs, Valet Parking, Deletion Sort
