October Challenge 2015
Time measure, Who dares to be a millionaire, Count Subarrays
December Challenge 2015
Chef and the stones, Oracle Devu and Longest Common Subsequence
January Long Challenge 2016
Rupsa and the Game, Churu and Balls, Chef and Time Machine, Devu and Perfume
February Challenge 2016
Chef and Strange Operations, Devu and a light discussion, Rectangles of Love, Chef-Detective
April Challenge 2016
Chef And Magical Path, Chef And Coloring, Chef and Ballons, Help Watson Escape
June Challenge 2016
Chef And The Hiring Event, Chef and Array and K, Chef And Binary Operation, Chef and Coins Game, Devu and an Array
July Challenge 2016
Andrash and Stipendium, Chef and Segments, Chef and Tetris, Chef and Robots Competition, Chefland and Electricity
August Challenge 2016
Chef and Round Run, Chef and Circle Run, Chef and His Garden, Chef and Chocolate
April Cook-Off 2016
Movie Weekend, Odd Divisors, Queries on a Binary Tree
July Cook-Off 2016
Chef and Proportion, Chef and Numbers
August Cook-Off 2016
Tweedle-Dee and Tweedle-Dum
October Cook-Off 2016
Watson asks Does Permutation Exist, ChefWatson uses Social Network
February Challenge 2017
Chef and Yoda, Gerrymander, Most Frequent Element, Chef and His Apartment Dues, Chef and his Best Friend, Chef and Triangles, Interval Game, Eugene and big number
April Challenge 2018 Division 2
Chef and Array (Challenge), Cutting Plants, Weight of Numbers, Highway Crossing, Count Good Prefixes, Average of Pairs, Workers
India