September Challenge 2015
Count Steps in Matrix, Chain of Doughnuts, Cracking the Code, Bank robbery
November Challenge 2015
Eugene and function, Chef and cakes
December Challenge 2015
Chef and the stones, Oracle Devu and Longest Common Subsequence
January Long Challenge 2016
Rupsa and the Game, Churu and Balls, Devu and Perfume
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 Tetris, Chefland and Electricity
September Challenge 2016
Chef and calculation, Chef and digits of a number, Chef and Friends, Faded Palindromes
October Challenge 2016
Chef and Keyboard, Fenwick Iterations, Chef and Three Dogs
August Cook-Off 2016
Tweedle-Dee and Tweedle-Dum
July Lunchtime 2016
Drumpf for President!, Lumpy - The Bus Driver
February Challenge 2017
Most Frequent Element, Gerrymander, Chef and His Apartment Dues, Chef and Triangles
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Fill The Matrix, Little Chef and Sums
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers
India