September Challenge 2016
Faded Palindromes, Chef and calculation, Chef and digits of a number
February Challenge 2017
Chef and His Apartment Dues
April Challenge 2017
Dish Of Life, Bear and Row 01, Similar Dishes
May Challenge 2017
Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers
July Challenge 2017
Chef and Sign Sequences, Whats in the Name
November Challenge 2017
Chef goes Left Right Left, Villages and Tribes, Periodic Palindrome Construction, Chef Hates Palindromes
July Cook-Off 2017
Chang and Bitwise OR, Chang and the Perfect Function
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers
March Challenge 2018 DIV 2
A Big Sale, Mix the Colors, Chef and Glove
India