February Challenge 2017
Chef and Triangles, Chef and His Apartment Dues, Most Frequent Element, Gerrymander, Alice and her garden
March Challenge 2017
Bear and Extra Number, Bandwidth of a matrix, (CH) Bear and Sorted Rows, Pishty and birthday, Xenny and Alternating Tasks, Completing favorite game, Cooking Schedule
July Challenge 2017
Chef and Sign Sequences, Pishty and tree, Whats in the Name, Calculator , IPC Trainers
December Challenge 2020 Division 1
Positive Prefixes, Even Pair Sum
