May Challenge 2018 Division 2
Minimum Deletions, Xor Again, Mighty Friend
September Challenge 2018 Division 2
Magician versus Chef, War of XORs, Chef and Adventures
November Challenge 2018 Division 2
Chef and Happiness, Chef and Difficult Contests, Chef and Ridges
October Challenge 2018 Division 2
Minimize Digitsum, Chef and Serves
Encoder (Rated for Division 2)
Knight Chess, Second Largest Element
January Challenge 2019 Division 2
Lucky Number Game, A Pizza Slice, Fancy Quotes, Chef and Modulo Game, Distinct Pairs, Different Neighbours, Yet Another Problem About Sequences
December Challenge 2019 Division 2
Chefina and Ranges, Plus Multiply, Binary XOR, Easy Subsequence Selection, Sticky Notes, (Challenge) Cubical Virus, That Is My Score!, Addition
India