August Challenge 2015
Cooking Machine, Gravity Guy
October Challenge 2015
Time measure, Count Subarrays, Who dares to be a millionaire
November Challenge 2015
Eugene and function, Chef and cakes
December Challenge 2015
Chef and the stones, Oracle Devu and Longest Common Subsequence
September Lunchtime 2015
Sum of palindromic numbers
March Challenge 2016
maximize the sum, Palindromic substrings
July Challenge 2016
Andrash and Stipendium, Chefland and Electricity
June Lunchtime 2016
Collisions, One more weird game
May Challenge 2017
Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers
India