October Challenge 2015
Who dares to be a millionaire, Count Subarrays
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Magical Path, Chef And Coloring
February Challenge 2017
Chef and His Apartment Dues
March Challenge 2017
Xenny and Alternating Tasks
June Challenge 2017
A Good Set, Xenny and Coin Rankings
March Challenge 2018 DIV 2
Chef and Glove, Minions and Voting
April Challenge 2018 Division 2
Weight of Numbers, Workers
May Challenge 2018 Division 2
Mighty Friend, Minimum Deletions, Xor Again
India