February Challenge 2015
Chef and Chain, Chef and Equality, Jigsaw Puzzle Solving, Chef and Strings, Chef and Strange Formula, Let us play with rank list
March Challenge 2015
Chef and Notebooks, Devu and his Class, Sign Wave
April Challenge 2015
Chef and Piano Scales, Division of Lands, Broken Telephone, Chef and Interview, Count Sequences
June Challenge 2015
Steady tables, Chef and His Friend, Chef and Memory Limit, Chef and Polygons
July Challenge 2015
Bread, MasterChef, Na2a and lucky stone, Chef and Cube
August Challenge 2015
Chef and insomnia, Aditi and Magic Trick, Gravity Guy, Way Out, Cooking Machine
September Challenge 2015
Chain of Doughnuts, Count Steps in Matrix, Lighthouses, Cracking the Code
October Challenge 2015
Time measure, Count Subarrays, Who dares to be a millionaire, Spheres, Rupsa and Equilateral Triangle
April Cook-Off 2015
Equality, Version Control System
July Cook-Off 2015
Cops and the Thief Devu, Maximize Disjoint Pair Sum
April Challenge 2016
Help Watson Escape, Fibonacci Queries, Chef and Ballons, Devu and good strings, Chef And Magical Path, Chef And Coloring
January Cook-Off 2016
Chef and Destruction, Chef and Fruits
India