April Challenge 2013
Maximum Weight Difference
November Challenge 2014
Distinct Characters Subsequence
February Challenge 2017
Chef and His Apartment Dues
February Challenge 2018
Chef And The Patents, Permutation and Palindrome, Chef And His Characters
March Cook-off 2018 Division 2
Chef Judges a Competition
May Challenge 2018 Division 2
Minimum Deletions, Xor Again
August Challenge 2018 Division 2
Sheokand and Number, Spell Bob
December Challenge 2018 Division 2
Chef and An Ideal Problem, Chef and Interactive Contests
November Challenge 2018 Division 2
Chef and Ridges, Chef and Difficult Contests
October Challenge 2018 Division 2
Chef and Serves, Byte to Bit
January Challenge 2019 Division 2
Lucky Number Game, Fancy Quotes
February Challenge 2019 Division 2
Chef and Secret Ingredients, Appy and Contest, Deputy Chef
March Lunchtime 2019 Division 2
Testing Robot, Pogo Stick Competition
April Challenge 2019 Division 2
Friend or Girlfriend, Maximum Remaining
June Challenge 2019 Division 2
Road Signs, Chef and Proxy, Guddu on a Date
August Challenge 2019 Division 2
Dilemma, Football, Distribute Apples, Zombie and the Caves
September Challenge 2019 Division 2
Easy Fibonacci, Chef and Interesting Subsequences
Mexico