January Long Challenge 2016
Churu and Balls, Chef and Time Machine, Devu and Perfume, Rupsa and the Game
February Challenge 2016
Chef and Strange Operations, Chef-Detective
March Challenge 2016
Palindromic substrings, maximize the sum, Chef And Special Dishes
April Challenge 2016
Help Watson Escape, Chef And Coloring, Chef And Magical Path, Chef and Ballons
May Challenge 2016
Chef and Balls, Forest Gathering, Chef and Big Soccer, Laddu
June Challenge 2016
Devu and an Array, Chef And Binary Operation, Chef And The Hiring Event, Chef and Coins Game
September Challenge 2016
Dividing Machine, Chef and digits of a number, Faded Palindromes, Chef and calculation
October Challenge 2016
Chef and Keyboard, Fenwick Iterations, Chef and Three Dogs
December Challenge 2018 Division 1
(Challenge) Delete DAG, Directing Edges
ALKHWARIZM (Rated)
Help Voldemort, Sam, The Charming Angel
Encoder (Rated for Division 2)
Knight Chess, Old Farmer, Paint the Wall
India