May Challenge 2015
Set Difference , Chef and new recipe, Chef and Prime Divisors
June Challenge 2015
Chef and Memory Limit, Chef and Polygons
July Challenge 2015
Bread, Na2a and lucky stone, Chef and Cube
August Challenge 2015
Aditi and Magic Trick, Cooking Machine, Gravity Guy, Way Out
September Challenge 2015
Chain of Doughnuts, Count Steps in Matrix
May Cook-Off 2015
Devu and friendship testing, Devu and decorating birthday cake
June Lunchtime 2015
Chef and Submatrix, Chef and Two Strings
October Challenge 2017
Max Mex, A Balanced Contest
Indonesia