September Challenge 2017
Little Chef and Sums, Minimum Good Permutation
October Challenge 2017
Max Mex, A Balanced Contest
September Lunchtime 2017
Chef and Cook-Off Contests
March Challenge 2018 DIV 2
A Big Sale, Mix the Colors, Chef and Glove
August Challenge 2018 Division 2
Sheokand and Number, Spell Bob, Problem Sort, Modular GCD
September Challenge 2018 Division 2
Magician versus Chef, War of XORs, Chef and Adventures, Bad Shuffle
November Challenge 2018 Division 2
Chef and Ridges, Appy Loves One, Chef and Difficult Contests, Chef and Happiness
Encoder (Rated for Division 2)
Knight Chess, Second Largest Element, Paint the Wall
India