February Challenge 2017
Chef and His Apartment Dues
March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number
May Challenge 2017
Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers
June Challenge 2017
A Good Set, Xenny and Coin Rankings
August Long Challenge 2017
Chef and Rainbow Array, Greedy Candidates, Palindromic Game, Chef and Mover
December Challenge 2019 Division 2
Plus Multiply, That Is My Score!
April Challenge 2020 Division 2
Sell All the Cars, COVID Pandemic and Long Queue
