September Challenge 2017
Little Chef and Sums, Minimum Good Permutation
October Challenge 2017
Max Mex, A Balanced Contest
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle, Partition the numbers
March Challenge 2018 DIV 2
A Big Sale, Mix the Colors, Chef and Glove
March Cook-off 2018 Division 2
Chef Judges a Competition, Chef Goes to the Cinema
June Cook-Off 2019 Division 2
Multiple Choice Exam, Eat Twice, Drink Slush
August Challenge 2020 Division 2
Chef Wars - Return of the Jedi, Another Card Game Problem, Chef and Linear Chess, Smallest KMP
India