May Challenge 2015
Set Difference , Chef and new recipe, Chef and Prime Divisors
June Challenge 2015
Steady tables, Chef and His Friend, Chef and Memory Limit, Chef and Polygons, Chef and String
July Challenge 2015
Bread, Na2a and lucky stone, Chef and Cube
August Challenge 2015
Aditi and Magic Trick, Cooking Machine, Gravity Guy, Way Out
May Cook-Off 2015
Devu and friendship testing
August Cook-Off 2015
Chef and the XORed Number , Chef and the Wildcard Matching
September Mega Cook-Off 2015
Forgotten Language, Stacks
July Lunchtime 2015
Greedy puppy, Puppy and game
India