September Challenge 2016
Chef and digits of a number, Faded Palindromes
May Challenge 2017
Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers
June Challenge 2017
Chef and the Feast, Xenny and Coin Rankings, A Good Set
July Challenge 2017
Chef and Sign Sequences, Tree Expectancy, Whats in the Name, Calculator
August Long Challenge 2017
Chef and Mover, Strings and Graphs, Greedy Candidates, Palindromic Game, Chef and Rainbow Array
August Cook-Off 2017
Real obtuse, From heaven to earth
August Lunchtime 2017
Mathison and the Dynamo shuffle, Mathison and pangrams
February Challenge 2018
Chef And His Characters, Chef And The Patents, Permutation and Palindrome
March Challenge 2018 DIV 2
A Big Sale, Chef and Glove
India