August Challenge 2015
Gravity Guy, Cooking Machine, Aditi and Magic Trick, Way Out
September Challenge 2015
Chain of Doughnuts, Count Steps in Matrix
December Challenge 2015
Chef and the stones, Plane Division, Oracle Devu and Longest Common Subsequence
August Cook-Off 2015
Chef and the Wildcard Matching
January Long Challenge 2016
Rupsa and the Game, Churu and Balls, Chef and Time Machine, Devu and Perfume
June Challenge 2016
Chef and Rectangle Array, Devu and an Array, Chef and cities, Chef and Coins Game, Chef And Binary Operation, Chef and Array and K, Chef And The Hiring Event
July Challenge 2016
Andrash and Stipendium, Chef and Segments, Chef and Tetris, Chef and Robots Competition, Chefland and Electricity, Scheduling jobs on a cluster
August Challenge 2016
Chef and His Garden, Chef and Round Run, Chef and Chocolate, Fighting Ebola, Chef and Circle Run
September Challenge 2016
Chef and Friends, Dividing Machine, Chef and Matrix Division, Chef and digits of a number, Faded Palindromes, JosephLand, Chef and calculation
October Challenge 2016
Big Queries, Chef and Two String, Chef and Three Dogs, Fenwick Iterations, Chef and Keyboard, Sereja and Stones, Sereja and Progressions
December Challenge 2016
Train Partner, Kth Max Subarray, Kirito in labyrinth, Edit Distance Revisited, Roses for Alexey, Our Base is Under Attack, Bear and Three Colours
August Cook-Off 2016
Tweedle-Dee and Tweedle-Dum
India