October Challenge 2017
A Balanced Contest, Max Mex
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle, Partition the numbers
February Challenge 2018
Chef And His Characters, Chef And The Patents, Car-pal Tunnel
March Challenge 2018 DIV 2
A Big Sale, Mix the Colors, Chef and Glove
March Lunchtime 2018 Division 2 (Unrated)
Chef and Friends, Magic Elements
December Challenge 2018 Division 2
Chef and Interactive Contests
November Challenge 2018 Division 2
Chef and Ridges, Chef and Happiness, Chef and Difficult Contests
October Challenge 2018 Division 2
Chef and Serves, Byte to Bit
October Lunchtime 2018 Division 2
Three Friends, Coloring the Grid
January Challenge 2019 Division 2
Lucky Number Game, Distinct Pairs, Fancy Quotes
June Challenge 2019 Division 2
Road Signs, Guddu on a Date
November Challenge 2021 Division 3 (Rated)
Weird Palindrome Making, Which Fuel is Cheaper, Equal Coins, Hill Sequence
CodeChef Starters 17 Division 3 (Rated)
Chef on Vacation, New Piece
CodeChef Starters 18 Division 3 (Rated)
Back to Campus, Make them equal
December Challenge 2021 Division 3 (Rated)
Valleys and Hills, List of Lists, Utkarsh and Placement tests
India