August Challenge 2015
Cooking Machine, Gravity Guy
May Cook-Off 2015
Devu and friendship testing
July Challenge 2016
Andrash and Stipendium, Chefland and Electricity
January Challenge 2017
Capital Movement, Cats and Dogs, Reservior
February Challenge 2017
Eugene and big number, Chef and Triangles, Chef and His Apartment Dues
June Challenge 2017
Pairwise union of sets, Triplets, Chef and the Feast, A Good Set, Xenny and Coin Rankings
November Challenge 2017
Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
January Challenge 2018
Partition the numbers, Rectangle, Maximum Score, K-Concatenation
March Challenge 2018 DIV 2
A Big Sale, Mix the Colors, Chef and Glove
July Challenge 2019 Division 2
Minimum and Maximum, Chef and Mean
August Challenge 2019 Division 2
Dilemma, Football, Distribute Apples, Zombie and the Caves
September Challenge 2019 Division 2
Chef and Interesting Subsequences
India