October Challenge 2015
Who dares to be a millionaire
September Lunchtime 2015
Sum of palindromic numbers
March Challenge 2016
Palindromic substrings, Chef And Special Dishes
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Magical Path, Chef And Coloring
June Challenge 2016
Chef And Binary Operation, Devu and an Array, Chef and Coins Game
September Challenge 2016
Chef and digits of a number, Faded Palindromes, Chef and calculation
October Challenge 2016
Chef and Keyboard, Chef and Three Dogs
August Cook-Off 2016
Tweedle-Dee and Tweedle-Dum
February Challenge 2017
Chef and Triangles, Chef and His Apartment Dues
March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number, Bandwidth of a matrix
India