May Challenge 2017
Chef and his daily routine
October Challenge 2017
Max Mex, A Balanced Contest
November Challenge 2017
Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
February Challenge 2018
Chef And His Characters, Chef And The Patents, Akanksha and End of Semester, Car-pal Tunnel, Permutation and Palindrome
February Cook-Off 2018
Chef and Cook-Off, Chef and Line
March Challenge 2018 DIV 2
Chef and Glove, A Big Sale, Mix the Colors
March Cook-off 2018 Division 2
Chef Judges a Competition
October Mega Cook-Off 2018 Division 2
Binary Nim 2, Ada and the Staircase
May Challenge 2018 Division 2
Mighty Friend, Minimum Deletions, Xor Again
November Challenge 2018 Division 2
Chef and Ridges, Chef and Difficult Contests, Chef and Happiness
February Challenge 2019 Division 2
Chef and Secret Ingredients, Appy and Contest, Deputy Chef
February Cook-Off 2019 Division 2
Buying New Tablet, Chef and Party
February Lunchtime 2019 Division 2
Average Number, The Tricky Deal
March Challenge 2019 Division 2
Chef got Recipes, Chef and Number Game, Chef and a Beautiful Digit
India