April Challenge 2015
Count Sequences, 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
July Challenge 2015
Na2a and lucky stone, Chef and Cube, Bread
August Challenge 2015
Gravity Guy, Cooking Machine, Aditi and Magic Trick
September Challenge 2015
Chain of Doughnuts, Count Steps in Matrix, Bank robbery, Lighthouses, Cracking the Code
October Challenge 2015
Who dares to be a millionaire, Count Subarrays, Time measure
December Challenge 2015
Chef and the stones, Plane Division
May Cook-Off 2015
Devu and friendship testing
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Magical Path, Chef And Coloring
August Cook-Off 2016
Tweedle-Dee and Tweedle-Dum
April Challenge 2017
Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes
August Challenge 2019 Division 2
Guddu and his Mother, Encoding, Dilemma, Football, Distribute Apples
May Challenge 2020 Division 1
Coronavirus Spread, Isolation Centers
India