February Challenge 2014
Little Elephant and Subarrays
April Challenge 2014
Farmer Feb, Shortest Path in Binary Trees
November Challenge 2014
Chef and Segment Game, Sereja and Permutations, Distinct Characters Subsequence
December Challenge 2014
Alok-nath and His Sanskars, Chef and Apple Trees, XOR with Subset, Kali and Devtas, Chef and Bracket-Pairs, Chef Under Pressure
December Challenge 2015
Chef and the stones, Chef and Filters, Oracle Devu and Longest Common Subsequence
August Cook-Off 2015
Chef and the Wildcard Matching
November Cook-Off 2015
Sereja and Array and Subtracting
January Long Challenge 2016
Rupsa and the Game, Churu and Balls, Devu and Perfume
July Challenge 2016
Andrash and Stipendium, Chefland and Electricity
September Challenge 2016
Chef and digits of a number, Chef and calculation, Faded Palindromes
February Challenge 2017
Chef and His Apartment Dues
March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number
October Challenge 2017
Max Mex, A Balanced Contest
India