October Challenge 2015
Who dares to be a millionaire
November Challenge 2015
Eugene and function, Chef and cakes
December Challenge 2016
Train Partner, Roses for Alexey
June Challenge 2017
Triplets, Pairwise union of sets
July Challenge 2017
Whats in the Name, Calculator , Chef and Sign Sequences
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
August Challenge 2018 Division 2
Problem Sort, Sheokand and Number, Spell Bob
India