September Challenge 2017
Minimum Good Permutation, Fill The Matrix, Little Chef and Sums, Chef and Pick Digit
August Cook-Off 2017
Real obtuse, From heaven to earth
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle, Partition the numbers
March Challenge 2018 DIV 2
A Big Sale, Chef and Glove
September Challenge 2018 Division 2
Magician versus Chef, War of XORs, Chef and Adventures, Bad Shuffle
December Challenge 2018 Division 2
Chef and Interactive Contests, Chef and An Ideal Problem
September Lunchtime 2018 Division 2
Judging Delay, Chef Restaurant
January Challenge 2019 Division 2
Lucky Number Game, Fancy Quotes
February Challenge 2019 Division 2
Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, Deputy Chef
India