October Challenge 2014
Chef and Ground, Magical Girl and Colored Liquid Potions
November Challenge 2014
Chef and Segment Game, Distinct Characters Subsequence, Chef and Red Black Tree, Let us construct palindrome
January Challenge 2015
Chef and Stones, Sereja and Votes
February Challenge 2015
Let us play with rank list, Chef and Equality, Chef and Strange Formula, Chef and Chain
April Challenge 2015
Chef and Interview, Broken Telephone, Chef and Piano Scales
May Challenge 2015
Devu and binary String, Chef and Prime Divisors, Set Difference , Chef and new recipe
June Challenge 2015
Chef and String, Chef and Polygons, Chef and His Friend, Steady tables, Chef and Memory Limit
July Challenge 2015
Addition and Multiplication, Bread, MasterChef, Na2a and lucky stone, Chef and Cube
August Challenge 2015
Way Out, Gravity Guy, Devu And Churu , Cooking Machine, Aditi and Magic Trick
September Challenge 2015
Count Steps in Matrix, Chain of Doughnuts
May Cook-Off 2015
Devu and friendship testing, Devu and decorating birthday cake
June Cook-Off 2015
Longest non regular parentheses sub-sequence, Strange operations
July Cook-Off 2015
Cops and the Thief Devu, Maximize Disjoint Pair Sum
March Challenge 2016
Palindromic substrings, maximize the sum
October Challenge 2018 Division 2
Chef and Serves, Byte to Bit
India