January Challenge 2015
Sereja and Votes, Chef and Stones, Gcd Queries, One Dimensional Kingdoms
February Challenge 2015
Chef and Chain, Chef and Strange Formula, Let us play with rank list, Chef and Equality
April Challenge 2015
Chef and Piano Scales, Broken Telephone, Chef and Interview
June Challenge 2015
Chef and Memory Limit, Chef and Polygons
August Challenge 2015
Gravity Guy, Cooking Machine
September Challenge 2015
Chain of Doughnuts, Count Steps in Matrix
April Cook-Off 2015
Equality, Version Control System
August Cook-Off 2015
Chef and the Wildcard Matching
March Challenge 2016
Palindromic substrings, maximize the sum
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Magical Path, Chef And Coloring
April Cook-Off 2016
Movie Weekend, Odd Divisors
June Lunchtime 2021 Division 2
False Number, Unpleasant Ones
July Challenge 2021 Division 3 (Rated)
XxOoRr, Chef vs Bharat, Maximum Production, Relativity
India