August Challenge 2015
Cooking Machine, Aditi and Magic Trick, Gravity Guy
May Challenge 2016
Chef and Balls, Forest Gathering, Laddu
September Challenge 2016
Chef and digits of a number
April Challenge 2018 Division 2
Chef and Array (Challenge), Workers, Average of Pairs, Count Good Prefixes, Highway Crossing, Weight of Numbers, Cutting Plants
June Challenge 2019 Division 2
Chef and Proxy, Guddu on a Date
