November Challenge 2016
Chef and squares, Count Permutations, Task for Alexey
January Challenge 2017
Capital Movement, Cats and Dogs, Reservior
February Challenge 2017
Chef and His Apartment Dues
March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number, (CH) Bear and Sorted Rows, Bandwidth of a matrix
April Challenge 2017
Dish Of Life, Bear and Row 01, Similar Dishes
May Challenge 2017
Chef and his daily routine
July Challenge 2017
Calculator , Whats in the Name, Chef and Sign Sequences
December Lunchtime 2017
Days in Month, Strange Function, Too Much Sweetness
January Challenge 2018
String Merging, Partition the numbers, Rectangle, Maximum Score, K-Concatenation, (Challenge) Chef and Palindromes
January Cook-Off 2018
Multiple of 3, Survive in ChocoLand
January Lunchtime 2018
Chef and Game with Sequence, Chef and Escaping from the Labyrinth
February Challenge 2018
Chef And His Characters, Chef And The Patents
Thailand