September Challenge 2014
Chef and Left-Right, Fun with Rotation
October Challenge 2014
Chef and Ground, Magical Girl and Colored Liquid Potions, DevuLand, Dinosaurs and Laddus
November Challenge 2014
Distinct Characters Subsequence
January Challenge 2015
Chef and Stones, Sereja and Votes
February Challenge 2015
Let us play with rank list, Chef and Equality, Chef and Chain
March Challenge 2015
Chef and Notebooks, Sign Wave
May Challenge 2015
Set Difference , Chef and new recipe
July Challenge 2015
Bread, Na2a and lucky stone, Chef and Cube
September Challenge 2015
Chain of Doughnuts, Lighthouses, Count Steps in Matrix
August Cook-Off 2015
Chef and the XORed Number , Chef and the Wildcard Matching
July Lunchtime 2015
Greedy puppy, Puppy and game
July Challenge 2016
Andrash and Stipendium, Chef and Tetris, Chefland and Electricity
August Challenge 2016
Chef and Chocolate, Chef and Round Run
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Fill The Matrix, Little Chef and Sums
June Challenge 2018 Division 2
Binary Shuffle, Naive Chef
India