February Challenge 2017
Chef and His Apartment Dues
November Challenge 2017
Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
February Challenge 2018
Chef And His Characters, Chef And The Patents
March Challenge 2018 DIV 2
A Big Sale, Chef and Glove
December Challenge 2018 Division 2
Chef and An Ideal Problem, Chef and Interactive Contests
November Challenge 2018 Division 2
Chef and Ridges, Chef, Primes and Trees (Challenge), Chef and Difficult Contests
October Challenge 2018 Division 2
Appy and Balloons , Minimize Digitsum, Chef and Serves, Byte to Bit
February Challenge 2019 Division 2
Chef and Magical Jars, Chef and Secret Ingredients, Deputy Chef
December Challenge 2019 Division 2
Plus Multiply, That Is My Score!
Serbia