January Challenge 2015
Chef and Stones, Sereja and Votes
February Challenge 2015
Chef and Chain, Let us play with rank list, Chef and Equality
April Challenge 2015
Chef and Interview, Broken Telephone
October Challenge 2015
Who dares to be a millionaire
April Challenge 2016
Chef and Ballons, Chef And Magical Path, Chef And Coloring
June Challenge 2016
Chef And Binary Operation, Devu and an Array
September Challenge 2016
Chef and digits of a number, Faded Palindromes, Chef and calculation
India