June Challenge 2016
Chef and Coins Game, Devu and an Array, Chef And Binary Operation
July Challenge 2016
Andrash and Stipendium, Chef and Tetris
August Challenge 2016
Chef and Chocolate, Chef and Round Run
September Challenge 2016
Chef and digits of a number, Faded Palindromes, Chef and calculation
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
August Cook-Off 2017
Real obtuse, From heaven to earth
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle
India