November Challenge 2014
Distinct Characters Subsequence
December Lunchtime 2014
Delivery Man, Queries On Tree
January Challenge 2015
One Dimensional Kingdoms, Gcd Queries, Sereja and Votes, Chef and Stones, Chef and A Large Permutation, Sereja and Number Division 2, Queries on the String
January Lunchtime 2015
Piece of cake, Just multiply
February Challenge 2015
Time to Study Graphs with Chef, Chef and Equality, Jigsaw Puzzle Solving, Let us play with rank list, Chef and Strings, Chef and Strange Formula, Chef and Chain
March Challenge 2015
Chef and Notebooks, Sign Wave
April Challenge 2015
Count Sequences, Chef and Interview, Broken Telephone, Chef and Piano Scales
July Challenge 2015
Maximum Difference Walk, Rohith and Circles, Chef and Cube, Na2a and lucky stone, Bread, Sereja and Game 2, Addition and Multiplication, MasterChef
August Challenge 2015
Way Out, Social Cluster, Gravity Guy, Devu And Churu , Cooking Machine, Aditi and Magic Trick, Chef and insomnia
August Cook-Off 2015
Chef and the Wildcard Matching, Chef and the XORed Number
October Cook-Off 2015
Word Stem, Almost Sorted Permutation
September Lunchtime 2015
Sum of palindromic numbers
September Cook-Off 2016
Lazy Jem, The Lost Arithmetic Sequences, Counting Strings
September Cook-Off 2017
Infinite OR Game, Statistics Construction, Subsequence Equality
February Cook-Off 2018
Chef and Cook-Off, Chef and Tuples, Chef and Line
India