September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle
January Cook-Off 2018
Multiple of 3, Survive in ChocoLand
January Lunchtime 2018
Chef and Game with Sequence
February Challenge 2018
Chef And The Patents, Permutation and Palindrome, Car-pal Tunnel, Points Inside A Polygon, Chef And His Characters
February Cook-Off 2018
Chef and Cook-Off, Chef and Tuples, Chef and Line
June Cook-Off 2018 Division 2
Archi and Comparsion, Good Permutations
India