December Challenge 2016
Kirito in labyrinth, Our Base is Under Attack, Train Partner
January Challenge 2017
Capital Movement, Cats and Dogs, Reservior
February Challenge 2017
Most Frequent Element, Gerrymander, Chef and His Apartment Dues, Chef and his Best Friend, Chef and Triangles, Eugene and big number
March Challenge 2017
Cooking Schedule, Xenny and Alternating Tasks, Bear and Extra Number, (CH) Bear and Sorted Rows, Bandwidth of a matrix
July Challenge 2017
Pishty and tree, Two Coins, IPC Trainers, Calculator , Whats in the Name, Tree Expectancy, Chef and Sign Sequences
December Challenge 2017
Chef and Universe, Total Diamonds, Santa Delivering Problem, Chef And his Cake, Chef And Easy Xor Queries, Penalty Shoot-out, Red and blue points, Chef and Hamming Distance of arrays
May Challenge 2018 Division 1
Change the Signs, Fake Binary Search, Dibs on Fibs
India