February Challenge 2017
Chef and His Apartment Dues
March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number
May Challenge 2017
Chef and his daily routine, Courses in an university
June Challenge 2017
A Good Set, Xenny and Coin Rankings
September Challenge 2017
Minimum Good Permutation, Little Chef and Sums, Chef and Pick Digit
October Challenge 2017
Max Mex, A Balanced Contest
September Lunchtime 2017
Chef and Cook-Off Contests
March Challenge 2018 DIV 2
A Big Sale, Mix the Colors, Chef and Glove
November Challenge 2018 Division 2
Chef and Ridges, Chef and Happiness, Chef and Difficult Contests
June Challenge 2019 Division 2
Chef and Proxy, Guddu on a Date
April Challenge 2020 Division 2
Sell All the Cars, COVID Pandemic and Long Queue
June Challenge 2020 Division 2
Chef and Icecream, Chef and Price Control
India