May Challenge 2017
Courses in an university, Chef and his daily routine
November Challenge 2017
Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
February Challenge 2018
Chef And His Characters, Chef And The Patents
April Challenge 2018 Division 2
Workers, Chef and Array (Challenge)
September Challenge 2018 Division 2
Magician versus Chef, War of XORs, Chef and Adventures, Bad Shuffle
November Challenge 2018 Division 2
Chef and Ridges, Chef and Difficult Contests
October Challenge 2018 Division 2
Minimize Digitsum, Chef and Serves, Byte to Bit
March Challenge 2019 Division 2
Chef got Recipes, Chef and Number Game, Chef and a Beautiful Digit
India